Open a Finder window, go to your hard drive, then Users > [your user file] > Library > Application Support > Godot > app_userdata
The game should be in there. Hope it works for you!
Thank you, after much searching I finally found it and the game runs now!
After the "enable loading screens?" window, no matter which option I choose, the game closes. I previously had the demo version so maybe my old save is messing it up, but I am on a mac and don't know how to manually delete my old save. Please help!