[Kitten]

pawn Код:

public OnPlayerSpawn(playerid) 
{
     new randomspawn = random( number of your spawns );
     switch ( randomspawn )
     {
          case 1 : SetPlayerPos( playerid , x , y , z ) ; // Random Spawn 1
          case 2 : SetPlayerPos( playerid , x , y , z ) ; // Random Spawn 2
          // add more if you want
     }
     return 1;
}

or just follow the samp wiki one

https://sampwiki.blast.hk/wiki/Random