My late father had a collection of roughly 45000 baseball cards, what do I do with them?

Do I sell, do I keep? I never had interest in collecting, but this could be worth thousands of dollars. I opened and scanned 412 cards and the estimated value over 3 apps is ~$2200

(Edit) These are 1946-1999 most are below 1970, and there are some pretty old unopened boxes that he labeled "1955 Mint Collection"