[Konstantinos]

Now you miss brackets. Do Ctrl + Z to undo.

and it should be:

pawn Код:

public OnPlayerSpawn(playerid)
{
    // code
    if(GetPVarInt(playerid, "ScreenShow") == 0) 
    { 
        SetPlayerInterior(playerid,0); 
        SetTimerEx("ShowTD",250,0,"i",playerid); 
    } 
    return 1; 
}

For the warning 'symbol is never used', use it somewhere or remove it. Don't worry about it though.