[admantis]

pawn Код:

new KickAndBans = 0;

pawn Код:

public OnPlayerDisconnect(playerid, reason)
{
    if (reason == 2) { KickAndBans += 1; }
    return 1;
}

pawn Код:

stock DisplayKickAndBans(playerid)
{
    new string[64];
    format(string, sizeof(string), "There has been %i kick and bans", KickAndBans);
    SendClientMessage(playerid, 0xFFFFFFFF, string);
    return 1;
}

Althought you can make separate variables, one for bans and other for kicks, this one counts both in one.