We can look around the world for examples of competent leadership and estimate what our own death toll would have been.
Under Angela Merkel, Germany has had 9337 deaths. Using an appropriate comparison for different populations, that means that if Merkel (or, say, Hillary Clinton) had been in charge here, 36,911 people would have died. Horrific to be sure, but a hell of a lot less awful than 181,000. That means that the deaths of at least 144,000 people are on Trump's hands.
And since Republicans have absolutely no discernible morals whatsoever, we can well imagine how Republicans would have acted if 36,911 had died under a President Hillary Clinton. Far from agreeing that 36,911 dead Americans was "acceptable," they would be calling for her impeachment every day.