(adsbygoogle = window.adsbygoogle || []).push({}); How can i Change the scorelimit using gsc ?

Destiny is the only menu I've used that could do that. You put on infinite game and you can keep playing the same match for hours. I played a public free for all match and had like 300 kills before I got bored of the map xD

You evidently havent used any other menu on the entire planet.

registertimelimit( 0, time );
registerroundlimit( 0, rounds );
registerroundwinlimit( 0, win_limit );
registerroundswitch( 0, switch_count );
registernumlives( 0, numlives );
registerscorelimit( 0, score );

They only work if you set it before the game starts if I remember correctly.

There are also level variables that can be set:
level.scorelimit = score;
level.roundwinlimit = limit;
level.timelimit = limit;
level.starttime = GetTime();
To set bomb timer in snd: level.bombtimer = time;
That should be enough for you to set whatever you want in the game. Most of this can be found in the dumps by checking patch_mp/maps/mp/gametypes.

I've used probably 50 different menus. Yeah they all have infinite match time / no timer.. but as soon as you hit the score limit the game usually ends. Destiny menu changes both the timer and the score limit

Let me correct myself. You havent used any good menus. Destiny is not a GSC menu so you cant really compare that with GSC menus.

How can i set gsc pre game ?

So what would be some good GSC menus then?

Pretty sure you could use this, haven't tested it yet but it should work during the game but i've only ever used the one that you need to set before the prematch countdown as seriousHD- has mentioned in his previous comment.

    setgametypesetting( "scoreLimit", getgametypesetting( "scoreLimit" ) + <VALUE HERE> );

None of them