SS: Book: around five times. Movie: around three.
CoS: Book: around three. Movie: two.
PoA: Book: around six. Movie: four
GoF: Book: two. Movie: one
OoP: Book: eight. Movie: around three
HBP: Book: around two. Movie: one.
DH: Book: around ten. Movie: (P1) around two. (P2) Around four.
So that makes:
Book: around thirty-eight in total
Movies: around nineteen in total
So in total total that would be fifty seven times i have read and watched Harry Potter