I guess it depends on whether you include movies like the Crow, V for Vendetta etc., or animated like Mask of the Phantasm but
29 or so DC movies
https://en.wikipedia.org/wiki/List_of_films_based_on_DC_Comics
49 or so Marvel movies
https://en.wikipedia.org/wiki/List_of_films_based_on_Marvel_Comics
Rest of the movies
https://en.wikipedia.org/wiki/List_of_American_superhero_films
I guess personally
13 MCU movies (Exclusing IM3, T: DW, TIH, IM2)
2 Spider-Man movies (1&2)
2 Superman movies (1 & 2)
5 Batman movies (B, B&R, TDKT)
6 X-Men movies (X, X2, FC, DOFP, DP, Logan)
Wonder Woman, Blade, Blade 2, Hellboy & 2, Dredd, Rocketeer, Crow, V for Vendetta, 300, Mask, Unbreakable, Road to Perdition.
That's like 41 or so not including movies like IM3, Superman Returns, Man of Steel, The Wolverine.