As I stated on a couple of other threads, Trump so far hasn't done anything to upset me or anything to give him praise. It's been a rather ho hum 100 days so far. Sure, a lot of things Trump has done or attempted to do has got him condemn as the devil or elevated to heaven by the folks on this site, the political active partisans. But for the public as a whole, not as partisan and not political junkies, its been business as usual with a shrug.
So a C minus or perhaps a C fits as far as I'm concerned. Trump started out at 44% approval and is at 42% today, not much movement. So most people haven't changed their minds about him, Minds made up long before the election. He has remained fairly steady in that aspect. In other words, Trump has done nothing so far, good or bad, to really move the needle. Compare Trump to Obama, Obama began at 64% approval and dropped to 60% over the same time period.
But comparing the two really isn't valid concerning the two different type of elections we that were held and how the American people viewed the candidates. 62% of all Americans had a positive or favorable view of Obama when he ran in 2012, Romney was was viewed positive by 55%. A majority of Americans viewed both candidates in a positive manner and had a heap of more trust in them than the candidates of 2016. In contrast only 34% viewed Trump positively, 38% Clinton. Each were viewed unfavorable or negatively by around 60% of all Americans. Neither was trusted and I suspect either on would be in the low 40's today as far as approval since the choice last November was one a majority of Americans didn't want to make.