you should have a look at Adobe's database, to see what's stored/saved about your accounts. Here you will find general infos about your Adobe Account
https://accounts.adobe.com/>>> see My productsView all >>> These registered products are associated with your Adobe ID. >>> Name >>> Serial number.
And to find your serial number have a look there http://helpx.adobe.com/x-productkb/global/find-serial-number.html >>> I lost my serial number >> see comment.
The last time Adobe suggests so too this https://helpx.adobe.com/contact.html?step=ZNA_downloading-installing-setting-up_licensing- activation
I forgot my user name and password?