No, Trump is not profiting off the Presidency. Not a bit.

The White House says it has chosen President Donald Trump’s golf resort in Miami as the site for next year’s Group of Seven summit.
The announcement Thursday comes at the same that the president has accused Joe Biden’s family of profiting from public office because of Hunter Biden’s business activities in Ukraine when his father was vice president.
The G-7 summit will be held June 10 to 12. The idea of holding the event at Trump National Doral Miami has been criticized by government ethics watchdogs.
Trump has touted his resort, saying it’s close to the airport, has plenty of hotel rooms and offers separate buildings for every delegation.
When the United States has hosted the summit before, it has been held in Puerto Rico; Williamsburg, Virginia; Houston; Denver; Sea Island, Georgia; and Camp David, the presidential retreat in Maryland.