There are 20 Goats in total and though some are missable progress is carried over across all playthroughs so no worries if you get locked out of a zone
- Just goats video guide
Not my video but this guy made an amazing collectable guide that lists every single file, outhouse, window, weapon and goat in the game its incredibly easy to follow and goes in order they appear so you can do a section pause and not be spoiled while getting 100%
*Timestamps in description if you're on mobile*