public OnPlayerConnect(playerid)
{
  SetPVarInt(playerid, "scoreTimer", SetTimerEx("GivePlayerHourlyScore", 60 * 60 * 1000, 1, "i", playerid));
  return 1;
}

public OnPlayerDisconnect(playerid, reason)
{
  KillTimer(GetPVarInt(playerid, "scoreTimer"));
  return 1;
}

forward GivePlayerHourlyScore(playerid);
public GivePlayerHourlyScore(playerid)
{
  GivePlayerScore(playerid, GetPlayerScore(playerid) + 1);
}