[gr56]

You set team for Textdraw2 which is not created, change to Textdraw0 or Textdraw1
also you check for team twice

pawn Код:

public OnPlayerDeath(playerid,killerid,reason)
{
    if(gTeam[playerid]==TEAM_SURVIVORS) {
    GroveScore--; //otherwise punishment
    BallasScore++;
    }
    else{
    BallasScore--; //otherwise punishment
    GroveScore++;
    }
  }

with your version
else BallasScore++;
is useless cause it won't be ever executed, same as
else GroveScore++;