It could be very handy to display the real size of the IPA after bitcode stripping on the landing panel of Unity Cloud, to have an idea if you’re off the limit or not.
Correct me if I’m wrong, but for the AppStore the Ipa size limit is after bitcode stripping right ?
That’s correct, here’s the doc if you need more informations.
Having the stripped size within Unity Cloud Build could be interesting but I doubt they got a way to do that as only Apple really knows the stripping process involved.
Your best shot (and also my advice) is to disable bitcode by putting a postProcessBuild for the time of your development and remove that post process at the submission time. Note that even with bitcode disabled the size of the ipa won’t be the same once processed by the App Store so expect an increase anyway.