There are no reports or widgets that provide this information for Telligent Community 6.x, but we do include the points a user has earned within the List User REST endpoint that you could use. With Telligent Community 7.0, we introduced a new in-process API endpoint that gives you information about Ranks for a user. Check out the new User - Badges widget as a starting point to create a custom widget to show Rank2 community members.
The other option is to run a query straight from the community database. We have provided a query as a starting point to several customers if that would also be helpful to you.