It doesn't benefit (you for male) هذا لا يعود بالنفع عليكَ
It doesn't benefit (you for female) هذا لا يعود بالنفع عليكِ
It doesn't benefit (us) هذا لا يعود بالنفع علينا
It doesn't benefit (him) هذا لا يعود بالنفع عليه
It doesn't benefit (her) هذا لا يعود بالنفع عليها
يعود -> return
There isn't any equivalent for "it" in Arabic language.
My advice for you is to learn classical or modern Arabic before trying to learn any other Arabic dialects.