#include <a_samp>

public OnGameModeInit()
{    
    SetTimer("Score", 180000,true);    
    return 1;
}
forward Score();
public Score()
{
    for(new i = 0; i < MAX_PLAYERS; i++)
    {
        if(!IsPlayerConnected(i)) continue;
        SetPlayerScore(i,GetPlayerScore(i)+1);
    }
    return 1;
}