Not much of a scripter, but I'd like to add my new account's to this age script or the group?.

if Player.AccountAge < 3 and not game:GetService("RunService"):IsStudio() then Player:Kick() return end	
Load(Player)
Player:LoadCharacter()

end)

How would I make a bypass for sub-accounts under that age? Also if you can make it to the group ID that'd be even better! Thank you.

Here, just use this inside of the workspace:

exceptions = {
	"Player",
	"Other Player"
}
age = 3
game.Players.PlayerAdded:connect(function(plr)
	if plr.AccountAge < age.Value then
		for i = 1, #exceptions do
			if plr.Name == exceptions[i] then
				print(plr.Name)
			else
				plr:Kick()
			end
		end
	end
end)

If this doesn't work, please comment. If it does, please upvote and accept answer.