Here's a breakdown:
* Total acting credits: According to IMDb, Harrison Ford has 68 acting credits.
* Live-action films: This number is likely to be around 50-60, as it excludes voice roles, television appearances, and short films.
* Major roles: If we focus on films where he had a substantial role, the number would be significantly lower, somewhere in the 30s.
To give you a more precise answer, you'd need to define what counts as a "movie" for you.