[Rachael]

The problem is basic flow of logic flaw. Your script is adding a player and then returning without even checking how many players are joined.

pawn Код:

if(IsBIKEMADNESSactive == 0) 
{                            
    
    SendClientMessage(playerid,RED,"You have join the bike madness");
    IsPlayersInBikeMadness += 1;
    SetPlayerPos(playerid,-1071.4938,-692.1391,368.5030);
    if(IsPlayersInBikeMadness >= 10 )   
    {
            IsBIKEMADNESSactive = 1; 
    }
    return 1; 
} else {
    SendClientMessage(playerid,RED,"There is all redey a group in the bike madness");
    return 1;  
}