Trump waived attorney-client privilege as to the Cohen tapes, after the Special Master found they were privileged and couldn't go to the prosecutors.
Cohen, however, still might be in danger of legal ethics charges for taping Trump without Trump's knowledge. But that would not keep the tapes out of evidence if they're ever offered in a courtroom.
According to Dan Bongino if Cohen taped Trump while Trump was in Florida he could be in heap big trouble.