I want to migrate Acrobat Pro 2020 to a new MacOS Tahoe laptop. It freezes on the Acrobat Licensing Application. I have deinstalled, reinstalled & granted disc access but it will won't boot.

this should be in the download & install forum.

migrating adobe apps usually fails.  you need to properly install acrobat.  ie, 

deactivate all adobe apps on your old computer VERY carefully (https://community.adobe.com/t5/download-install-discussions/activation-limit-reached-for-non-subscription-adobe-desktop-applications/td-p/14804413?linkId=100000376554410)

then uninstall all adobe apps.

then migrate your old to your new computer

then properly install and activate your adobe apps on your new computer.

NOTE: deactivation will always disable further usage on your old computer but if that deactivation is not successfully conveyed to adobe’s servers you will permenantly lose that activation seat.