The Environments tab of the Business Central administration center provides you with an overview of the Business Central production and sandbox environments for the tenant, and you can manage updates for each environment.

Access the Admin Center via the Gear in Business Central and select "Admin Center"

Using the Environments list, you can identify the "Name" of the environment.  Typically these are "Production" or "Sandbox".

See the following link for additional details with regards to managing your environment in the Business Central Admin Center: