To create a Bugzilla account, all you need to do is enter a legitimate e-mail address. The account will be created, and its password will be mailed to you. You will not be able to log in until you receive the password. If it doesn't arrive within a reasonable amount of time, you can contact the maintainer of this Bugzilla installation at firstname.lastname@example.org.
Optionally you may enter your real name as well.