Review the applications you are going to delete and click Remove.Tick them and all their service files will be automatically selected for uninstallation. You will easily detect the 32-bit apps as their icons will be crossed out. Skim the list of all your apps and select the unneeded ones.To delete apps with 32-bit architecture from your Mac, complete the following steps: For this, we advise using the universal software tool, App Cleaner & Uninstaller, instead of looking for native uninstallers for each outdated program. If you do not need the program or you cannot update it to meet the macOS Catalina requirements, you should remove the app.If you downloaded a program from the developer’s website, check for an update on the app’s website or contact support.Review the apps and improve the ones you want to use. If want to upgrade a program, open App Store and select the Updates section.Since these software tools are unusable, you should either update unsupported 32-bit apps to their 64-bit versions or remove them from your Mac.

Apple application support 64 bit