I have seen parts of this movie and I'm still not sure if it's a Pro-Trump or Anti-Trump film. Michael Moore is an open Hillary Clinton supporter, but has openly stated that he thinks Donald Trump will win this election. In the film, he even compliments Trump and thinks what he has done is amazing and historical. He also stated that Trump has more support than what the polls are saying, and that we might be in for a shock come election day.
I think when Michael Moore is saying about Trump that "what he has done is amazing and historical" he's saying it with sarcasm. Have you seen his other movies like Fahrenheit 9/11 or Bowling for Columbine for example? Using sarcasm is just his style, he's always doing it.
Moore publicly announced his support for Bernie Sanders in the upcoming 2016 United States presidential election so it's very unlikely he'd be sympathizing to Trump.