A typical expression meaning "more than one" is, from Farlex
one or two
A small number; a few; a trivial or insignificant amount.
There have been one or two issues since we started operation, but overall everything has gone smoothly.
Here, the expression "one (or ten)" does not mean actually 10 rounds of golf, but is a reference to the fact that Mr Trump plays a lot of golf.
The Guardian says
Trump’s dedication to playing golf while in office has been a source of continuing controversy – particularly because he memorably and repeatedly lambasted his predecessor, Barack Obama, over how often he played the game.
So the report is referring to Mr Trump's love of golf (he owns many courses) and remarks that he is having quite a lot of down time.
Side note: He is not yet out of a job or have time on his hands, but he probably needs a rest after the intense campaigning.