Account number so I can switch to my account
Your account number is in your My Verizon account. If you are unable to login to My Verizon, or are getting a message saying something about "getting the full Account Owner experience when [something] is activated" or else the URL has "guest" in it someplace, then what happened is you got a guest account instead of an actual one, and the guest account can't have anything linked to it despite any wording saying otherwise. If you do have a guest account, I would try re-registering for My Verizon using the link below:
https://secure.verizon.com/accessmanager/public/c/reg/start