To make a clon of bitcoin and sell it? What should I do?
What is a clon? Clon
e? Clo
wn ?
You can just fork bitcoin, or copy the code, create a token in another chain that you call "bitcoin".
But did you think people around here are so stupid that they are waiting a fake bitcoin

?
You should no nothing. Save your energy for study and not for scam other people.