Cloud licensing is done differently than hosted instances, and is controlled centrally rather than by an individual license file per instance. As such, the same "license" page is not present in the admin console. Instead there are a couple of options available to you if you are interested in checking in on your consumed seats.
1. The number of users in your instance is reported via your secret customer group in the monthy hosting reports posted there.
2. Your account manager can also provide you with the total number of consumed seats in your instance
Thanks Jesse, good to know.