The Licenced badge says:
This badge is granted upon successful completion of the interactive advanced user tutorial. You’ve mastered the advanced tools of discussion — and now you’re fully licensed!
Where does one find the “interactive advanced user tutorial”?
So when you first made an account here you got a message from @discobot and it send you some instructions on how to navigate the site. It would start a conversation with you and you just have to complete its challenges.
If you don’t have that message in your inbox anymore you can simply just send a message to @discobot saying " @discobot start advanced tutorial" or " @discobot start tutorial" and the bot will start over with you for this badge.
Hope this helps 
Hi! To find out what I can do, say @discobot display help.
