[Konstantinos]

You must use () in if statements.

pawn Код:

if (GetPlayerScore(playerid) >= 500)
{
    // code..
}

and

pawn Код:

if (GetPlayerScore(playerid) >= 200)
{
    // code..
}

And a note, that the last valid bound in the array NSpawns is 2.

pawn Код:

SetPlayerFacingAngle(playerid, NSpawns[Random][2]);