You are running into this: Unity version 2021.3.28f1 lacks the UWP Publish Button in Visual Studio Build for package generation
That thread contains a workaround and an issuetracker link (the fix is in progress).
You are running into this: Unity version 2021.3.28f1 lacks the UWP Publish Button in Visual Studio Build for package generation
That thread contains a workaround and an issuetracker link (the fix is in progress).