Because Muse is no longer actively developed, Adobe hides it by default in the Creative Cloud desktop app. Follow these steps to find it:
: Click your Profile/Account icon in the top-right corner and select Preferences .
: Launch the Creative Cloud Desktop app on your Mac.
: Since development stopped in 2018, sites built with Muse may not comply with the latest web browser standards or security protocols.
: Adobe no longer offers live troubleshooting or bug fixes for Muse. Why Adobe Discontinued Muse
While reached its official "End of Service" in March 2020 , you can still download it on a Mac if you have an active Creative Cloud All Apps subscription. How to Download Adobe Muse for Mac (Official Method)