If the pee taped existed, I would have expected it to surface by now. It could exist, but it doesn't seem likely.
It depends who has the tape. If it was being held by someone who didn't want Trump to be president, for example, we'd expect it to have come out before the 2016 election, to do its damage. If, on the other hand, it's being held by someone who is using it to insure compliance with certain terms (e.g., to make sure Trump remains available to veto any new sanctions on Russia), then we wouldn't expect it to surface until either Trump is out of office (and thus there's no value in holding onto it), or Trump breaches the terms of the deal. If, say, Putin held that tape, why would you expect it to surface by now?
This is so basic to rational thought.. 
