The sentences both have other problems (for instance, failing to start with a capital letter and failing to end with a question mark), but you should not use "it" in that sentence. B is the better sentence.
which one is correct ?
a)how much is it a ride to The Empire State Building.
b)how much is a ride to the The Empire state Building.
I don't think this sentence has anything to do with the expression "how much is it?" meaning "how much does it cost?" In this sentence, it means "to what degree is it ...?". The question could be rephrased as "To what degree is this film a traditional sci-fi short?"-How much is it a traditional sci-fi short?
I don’t think I could really answer that! It depends on the kind of science fiction you’re trying to make. It was a traditional short film in that it was hard to make - we ran a KickStarter crowdfunding campaign, raising just over £4000, and even then had to pull in a lot of favours.
Local Short Film White Lily Showing at Mayhem Film Festival