This is an annual question – it comes up every time AutoCAD releases a new version. The fact that so many people ask us what their serial number is speaks to serious flaws in Autodesk's system for notifying users, but I can't do anything about that. What I can do is tell you a number of places to look for that serial number.
Option 1. The first is an email that Autodesk sends out every time a new version is released. The email is sent to the Subscription Coordinator in your company. This email states the serial number and product key clearly. Here is what our looks like (minus the blur):
Oftimes the Subscription Coordinator is accounting person or somebody who pays the bills, when it really should be the design manager or computer person in your company. Whomever it is can add you as a contact also, from inside the Subscription Center. PS – My email was flagged as spam, so who knows if your even got through.
Option 2. From inside the Subscription Center, you can pick Contract Administration from the left list of choices. Then pick Coverage Report. This will list your serial numbers and products:
Option 3. From the Subscription Center, you can request help from the links on the right. You can ask for your serial number there.
The H-Factor 
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