I hope you will be successful in your exam I hope you will pass your exam I wish you success in your exam :)

"Success" is a noun, so we wouldn't say "be success" in this case. Instead we would use the verb "have" and say: I hope you have success in your exam. Or, more likely, we would use the adjective form of success which is "successful" and say: I hope you will be successful in your exam. I hope that helps!