The important Mac files are in the Resources/autorun folder. So it would be "Show package contents" -> Resources -> autorun.
Viewing post in Mac version files [potential spoilers]
I'm aware, but when I go there, the contents do not change, even though, from what I understand, changes should be occurring to what files are present. For example it seems that after clearing my first route, Sayori's file remains unchanged in the autorun/character folder. And the traceback or whatever it was called file is not present at all within that folder. (though when errors occur within game I am able to open the txt file through the button in the game)