BuddyPages are deleted from the edit page screen. Click “Edit” when viewing a BuddyPage. On the lower right you will find a delete link. Site Admins can edit and delete BuddyPages from the BuddyPages admin menu item.
Note: this completely removes the content from the site. if you want to keep a page but not display it on the site choose the draft option in post status.
To get to the BuddyPages management screen with BuddyBoss, you need to visit the Account Settings section and find the “Pages” listing in the menu shown.
Example URL for BuddyPages management: https://mysite.com/members/USERNAME/settings/pages/
Once there, the same general UI demo’d above should be present, though it may visually look different based on current theme.