Illustrator 24.2.1 now crashes when my system goes into energy saving mode on OSX Catalina. Literally when waking Macbook Pro up I'm dealt the "illustrator has unexpectedly quit" dialog box every time. Trying to remember clealy but i'm sure the latest Indesign has done this too. The latest updates seem super buggy.
While submitting the crash report, please use the same email address, with which you are signed in on this community. This will help us find the crash report and help accordingly.
After sharing the crash report, please try turning off Automatic Graphics Switching as suggested by Monika. Go to Apple menu > System Preferences and click Energy Saver > Deselect the automatic graphics switching checkbox.
Let us know if this helps or if you have any further questions.