For everyone wanting mac here is a relatively simple fix
credit to @jeremychu for this as this is just a streamlined version of what he says to do without so much terminal use
Note: The chmod +x command modifies the file and tells your mac that it is supposed to be executed like an app instead of read like a text file. The file we are modifying is the one the app uses to launch but the dev forgot to mark the file as executable so thats all we are doing here.
step 1: find the app in finder
Step 2: Right click or ctrl click on app and click show package contents
step 3: the last step should bring up a folder labeled "Contents" within that open the "MacOS" folder you should see a file labeled something like Art School 2k19.
Step 4 open terminal and type "chmod +x "(note the space after x) drag the file we just found into the terminal window and then hit enter it should look something like this [chmod +x stuff/stuff/stuff/stuff/Art School 2k19]
Step 5 Its fixed navigate back to where you started on step 1 open the file like a normal itch io game and enjoy
If you dont know how to open it or its not working after this the next steps are for you otherwise your done.
Step 6 right click on app and click open it will give you a popup that this is downloaded from the internet hit "ok"
Step 7 right click again and click open it will give you another popup. click "open" on the popup.