Beavis and Butt-Head : Why would their fathers be able to score but not Beavis and Butthead?

That always made me laugh after watching the movie, how Beavis and Butthead cannot ever be allowed to score, due to being ugly, deformed and stupid, while their fathers were probably exactly the same way that they were judging from their appearance and looks and lack of intelligence.

Shouldnt Beavis and Butthead have been able to find two sluts and score like their dads did too? And what would they do after they score?

They could easily make a new episode where their fathers return to Highland to find those two sluts to score with them again, then Beavis and Butthead realize that they are their fathers but they leave town quickly, basically letting them know that their fathers scored so they might have a chance too, might have been funny.

Butthead did appear to look up to his father in the movie, Beavis didnt acknowledge his dad at all though.

Well the Dads were roadies for Motley Crew, that was a big deal back then.

You answered your own question. They scored with sluts. When B&B get older, they'll probably score with sluts too.

Keep in mind that B+B were only supposed to be about 14-15 yrs old. By the time they were 19-20, they probably were able to get lucky once or twice with some equally stupid or equally desperate females.