Billing
This component takes you directly to the Subscriptions link area under Billing | Subscriptions. It's important to note that the subscriptions you see here are the ones you've ordered directly from Microsoft. If you're purchasing Office 365 through a partner, you might not see anything here.
Some Office 365 customers purchase services through Microsoft, and others through the partnership Cloud Solution Provider (CSP) program. Some do both. If you buy any subscriptions from Microsoft, you'll see them under Billing, but any that you buy through a reseller will only appear in Licenses.
There are levels of administrator access that give you the ability to use the portal to maintain services, but not to interact with the financial end. If your level of administrator access doesn't give you billing access, you might not see this dashboard component.