There is currently no way to find the password of sub accout email addresses. It is easy to retrieve or reset the password of your primary Verizon email address. It is impossible to do this for sub accounts.....or it is incredibly well hidden. PLease fix this!
My response from a previous thread (which I found easily with the SEARCH feature):
You change a forgotten password for a sub account the same way you do for the primary account. There's a "Forgot Password" link that will reset it for you once you answer the Secret Question, or you can contact Technical Support and they can reset it for you. There are several options for getting in touch with someone in Tech Support on the Contact Us page.