[Sasino97]

Error Number 1:

This is why there is the "forward" function...

pawn Код:

forward PublicName(arguments);

Error number 2:

SetTimer("ShowScores", time, 0); //Who's the playerid?
The compiler doesn't know who is him!! You should show the score to all players, so use for (i ...) etc

ShowScores(playerid) // -.-

pawn Код:

for(new i = 0; i<MAX_PLAYERS;i++)
{
  SetTimerEx("ShowScore", time, repeating, "i", i); //The same concept to all timers with arguments
}