[SilentSoul]

Move your codes to OnPlayerDeath , that should work and you don't have to check if the player health lower than 0 this function used when the player death ( when his health equal too 0 then that's automatically check instead of checking every damage if his health equal 0 ) just use something like that

pawn Код:

public OnPlayerDeath(playerid, killerid, reason)
{
    SetPlayerScore(killerid,GetPlayerScore(killerid)+1);
    return 1;
}

PS: Sorry for editing!