Where to find it
After you sign in to sso.unified-apps.com, you see the SSO dashboard. Open the app launcher and the Billing tile sits among the other Unified Solutions app tiles.

Opening the app
Click the Billing tile to open the Billing app. You land on the Billing dashboard, signed in and ready to work.
If you do not see the tile
Your agency administrator controls which apps you have access to. If the Billing tile is missing from your SSO dashboard, ask your administrator to check your account permissions.