Here's why:
* Different sources list different numbers. Some say he made over 50, others closer to 70. This is likely due to varying definitions of what constitutes a "movie" (including short films, cameos, etc.).
* He starred in, co-starred in, and had cameos in many films. This adds to the confusion when trying to count his total output.
It's safe to say that Bob Hope appeared in well over 50 films and likely closer to 70 if you count all his appearances, both large and small.
He was a prolific actor and comedian, and his legacy in film remains significant.