If I take DoodleJump as an example, my current score is 435,782, is there any way that I can hack it to make my score go up? (via editing)
For doodle jump
On ifile go to
/var/mobile/applications/50CA....../Library/preferences/com.yourcompany.....
U should then see something like this
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "
https://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
**<key>

oodleJumpActiveTheme</key>
**<integer>1</integer>
**<key>

oodleJumpAlert</key>
**<integer>1</integer>
**<key>

oodleJumpDisplayedNewsIds</key>
**<array/>
**<key>

oodleJumpGameStats</key>
**<dict>
** *<key>AbductedByUfo</key>
** *<integer>0</integer>
** *<key>AverageDivider</key>
** *<integer>62</integer>
** *<key>JetPackFlights</key>
** *<integer>18</integer>
** *<key>JumpsAverageDivider</key>
** *<integer>62</integer>
** *<key>KilledByMonster</key>
** *<integer>7</integer>
** *<key>LastJumps</key>
** *<integer>119</integer>
** *<key>LastPlayTime</key>
** *<integer>128</integer>
** *<key>LastScore</key>
** *<integer>22841</integer>
** *<key>LongestPlayTime</key>
** *<integer>239</integer>
** *<key>MaxJumps</key>
** *<integer>230</integer>
** *<key>MissedLanding</key>
** *<integer>54</integer>
** *<key>MonstersJumpedOn</key>
** *<integer>16</integer>
** *<key>MonstersShot</key>
** *<integer>41</integer>
** *<key>PropellerHatFlights</key>
** *<integer>25</integer>
** *<key>RocketFlights</key>
** *<integer>0</integer>
** *<key>SuckedInByBlackHole</key>
** *<integer>1</integer>
** *<key>TotalGamesPlayed</key>
** *<integer>62</integer>
** *<key>TotalJumps</key>
** *<integer>1958</integer>
** *<key>TotalPlayTime</key>
** *<integer>2245</integer>
** *<key>TotalScore</key>
** *<integer>406593</integer>
** *<key>UfosJumpedOn</key>
** *<integer>1</integer>
** *<key>UfosShot</key>
** *<integer>7</integer>
**</dict>
**<key>

oodleJumpHScore</key>
**<integer>1090685070</integer>
**<key>

oodleJumpHScoreSent</key>
**<integer>1</integer>
**<key>

oodleJumpHash</key>
**<string>bd9000df55a6c277e4db993af469d9b8</string>
**<key>

oodleJumpLastDetectedNewsId</key>
**<integer>79</integer>
**<key>

oodleJumpLatestVersion</key>
**<real>1.2699999809265137</real>
**<key>

oodleJumpLocalHSDates</key>
**<array>
** *<date>2010-07-05T01:27:33Z</date>
** *<date>2011-01-13T23:56:06Z</date>
** *<date>2010-10-24T15:19:09Z</date>
** *<date>2011-01-29T21:28:46Z</date>
** *<date>2010-10-31T17:15:12Z</date>
** *<date>2010-06-29T15:14:41Z</date>
** *<date>2010-07-05T01:21:51Z</date>
** *<date>2010-12-25T20:32:17Z</date>
** *<date>2011-01-04T19:34:45Z</date>
** *<date>2010-12-27T23:25:40Z</date>
**</array>
**<key>

oodleJumpLocalHSFacebookIDS</key>
**<array>
** *<string>0</string>
** *<string>0</string>
** *<string>0</string>
** *<string>0</string>
** *<string>0</string>
** *<string>0</string>
** *<string>0</string>
** *<string>0</string>
** *<string>0</string>
** *<string>0</string>
**</array>
**<key>

oodleJumpLocalHSNames</key>
**<array>
** *<string>Nick</string>
** *<string>cgs18</string>
** *<string>Nick</string>
** *<string>cgs18</string>
** *<string>Nick</string>
** *<string>

oodler</string>
** *<string>Nick</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
**</array>
**<key>

oodleJumpLocalHScores</key>
**<array>
** *<string>38885</string>
** *<string>28239</string>
** *<string>24661</string>
** *<string>22841</string>
** *<string>22808</string>
** *<string>21711</string>
** *<string>20300</string>
** *<string>20131</string>
** *<string>17278</string>
** *<string>16556</string>
**</array>
**<key>

oodleJumpLocalRSNames</key>
**<array>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>cgs18</string>
** *<string>Nick</string>
**</array>
**<key>

oodleJumpLocalRScores</key>
**<array>
** *<string>8064</string>
** *<string>5357</string>
** *<string>1558</string>
** *<string>527</string>
** *<string>6225</string>
** *<string>5752</string>
** *<string>7546</string>
** *<string>3107</string>
** *<string>11362</string>
** *<string>602</string>
** *<string>1370</string>
** *<string>477</string>
** *<string>833</string>
** *<string>687</string>
** *<string>452</string>
** *<string>920</string>
** *<string>203</string>
** *<string>4505</string>
** *<string>4071</string>
** *<string>677</string>
** *<string>676</string>
** *<string>1662</string>
** *<string>3730</string>
** *<string>4342</string>
** *<string>832</string>
** *<string>2069</string>
** *<string>553</string>
** *<string>1229</string>
** *<string>4975</string>
** *<string>4990</string>
** *<string>129</string>
** *<string>1084</string>
** *<string>528</string>
** *<string>102</string>
** *<string>9299</string>
** *<string>2046</string>
** *<string>680</string>
** *<string>404</string>
**</array>
**<key>

oodleJumpNewsStatus</key>
**<integer>2</integer>
**<key>

oodleJumpOptionsCalibration</key>
**<integer>1</integer>
**<key>

oodleJumpOptionsGameMode</key>
**<integer>1</integer>
**<key>

oodleJumpOptionsScoreMarkers</key>
**<integer>6</integer>
**<key>

oodleJumpOptionsScoreSubmissions</key>
**<integer>2</integer>
**<key>

oodleJumpOptionsShooting</key>
**<integer>2</integer>
**<key>

oodleJumpOptionsSounds</key>
**<integer>2</integer>
**<key>

oodleJumpPlayerName</key>
**<string>cgs18</string>
**<key>

oodleJumpPreviousPlayerName</key>
**<string>

oodler</string>
**<key>

oodleJumpRating</key>
**<integer>3</integer>
**<key>

oodleJumpRatingTime</key>
**<integer>1229</integer>
**<key>

oodleJumpSkipHelp</key>
**<integer>1</integer>
**<key>

oodleJumpVersion</key>
**<real>1.2799999713897705</real>
**<key>WebKitLocalStorageDatabasePathPreferenceKey</key>
**<string>/var/mobile/Applications/50CA27FD-A4EE-4353-AEB2-20BBE923D3E6/Library/WebKit/LocalStorage</string>
**<key>WebKitOfflineWebApplicationCacheEnabled</key>
**<true/>
**<key>WebSmartInsertDeleteEnabled</key>
**<true/>
</dict>
</plist>
Edit however you want
Example
<key>

oodleJumpHScore</key>
**<integer>435782</integer>
Change to
<key>

oodleJumpHScore</key>
**<integer>9999999999</integer>
Nd there's ur new high score =D