You can search for a registry here. If you can't find the registry you're looking for, there’s a good chance the registrants have it set to private. The registrants will need to provide you with the direct link to the registry to access it.
If you have that direct link (usually something like this: http://www.babylist.com/name-of-expecting-parent), you'll want to type that into your web address bar, not the registry search on the BabyList website.
Occasionally, the registrants will choose to have their registry password protected. If you have been given the password, enter that into the password field and that will allow you to access the registry. If you do not have a password, our best recommendation is to contact the registrant or shower host directly for it. We would also be happy to reach out to the registrant directly for permission to share it.