Well, at least in my opinion, Nofap is not only useless, it's also bad for you. I know that because i'm participating the No Nut November challenge, as i like to try everything that can give me a positive advantage, it's day 22 already and tbh i'm only doing it at this point because i've already wasted a lot of time on it, so i might as well finish it (sunken ship fallacy, i know).
It gives you a slight boost in energy and makes you more self-conscious about your grooming, but on the other hand it shoots up your libido, makes you feel really irritated around women, gives you random boners and wet dreams. There is just no reason to be horny all the time as an incel, that shit is harmful, as you won't be chasing women around anyways, so why bother with it?
Anyways, i woudn't recommend it to any of you, as long as you watch porn just to jerk off, you'll be fine. As i like to say nowadays "A fap once a day keeps your libido at bay".