Not including short story collections, poetry collections, anthologies, etc.
For me, I believe it’s Oroonoko by Aphra Behn because it was on the syllabus for three different classes that I took in college. Other than that, the most I’ve read a single book is twice, and that was Telegraph Avenue by Michael Chabon. I’ve read Dracula 1.5 times. Didn’t finish it the second time around.
Wharton is the best. Weird movie though.
I saw the movie in the theater when it came out. I was 16 and Michelle Pfeiffer, Winona Ryder, and Daniel Day Lewis were huge at the time. Teenage me loved the sets and costumes but I found the story boring and the subtlety went over my head. I rediscovered the book in my late 20s and fell in love.