Good striptease clubs in Dubrovnik are hard to come by and honest ones even more so. As a matter of fact, officially there are no strip joints in Dubrovnik. There used to be one underneath the Revelin Fort (https://www.clubrevelin.com/), below the club and the restaurant. I’m afraid it closed down.
That is to say to officially: some people in certain circles say that around 2 in the morning their bar girls go full topless and take people to the basement. What happens there? I do not know. I heard that it’s a massive tourist trap and security likes to push people around. Again: just rumors.