When you accept a Business Manager invitation and confirm your identity, you'll associate your work email with your LinkedIn profile to create a Business Manager profile. You’ll use this new profile to access Business Manager and the ad accounts and Pages you’ve been added to through Business Manager. LinkedIn may send you communications at the email address from your Business Manager profile.
The email address provided doesn’t need to be associated with your LinkedIn profile and won’t be added to your LinkedIn profile, but you must have a LinkedIn profile to use Business Manager.