"The Art of the Deal" was written by Tony Schwartz. He's said that getting Trump to sit down for interviews for more than five minutes was practically impossible [1].

It's well known that Trump doesn't enjoy reading. It seems unlikely that Trump has read "The Art of the Deal" even though he's credited as a co-author on the cover.

[1] https://www.newyorker.com/magazine/2016/07/25/donald-trumps-...