Trump is probably on the list, so he has to protect that. The Democrats had it during their entire presidency; even if they didn’t want turmoil during their time in office, they could have released it after their presidential defeat and before Trump took office.
Its rumored that Epstein was working with Israeli Intelligence so they probably have big files on many prominent Democrats and Republicans which is why everybody talks a big game about releasing the client list (if it exists) but never follows through. Its stuff like this that exposes the real game that both these parties are working together against the American people. The party always comes first.