[Mean]

pawn Код:

public OnPlayerDisconnect( playerid, reason ) 
{
    new file[ 128 ], name[ 24 ];
    GetPlayerName( playerid, name, 24 ); 
    format( file, sizeof file, "Folder/%s.txt", name ); // Change the filepath
    dini_IntSet( file, "Score", GetPlayerScore( playerid ) ) 
    return 1;
}

Example of score saving.