This will reset your score automatically as soon as you die.
Put this in your FireGameEvent hook.
if (!strcmp(name, "player_death"))
const auto attacker = g_pEngine->GetPlayerForUserID(event->GetInt("attacker"));
const auto userid =...
Its a pretty p cheat if you cfg it right, basically xyo with more features such as stickrpg aimbot, Rifk Visuals and a bunch of other shit, Have fun