(adsbygoogle = window.adsbygoogle || []).push({}); i used cheatengine . im not gonna give u a full detail tutorial but ill give u a little. i figured it out myself just pause it and search for your score unpause and pause and re=search until you have only one value. if you try to just change the value midgame it will detect that you cheated so you have to find out what writes to the address. open it up so you can write your own code in.
to add an extra amount in, use 'add value, 1000. i usaully do 1000, so everytime ur score goes up 1 point, it adds an extra 1000 points in.
just a tip practice on a fake account cuz if u mess up and it detects your cheating then it wont save on the leaderboard, on my real facebook my score is much higher but it wont save to the global boards, only friends. i am currently first place in the world. enjoy