We are happy to hear you want to learn more about our community badges. The number 27 means that 27 instructors in the community earned this badge.
Our community champions are superusers in the community, which are selected by Udemy, while considering various metrics such as length of community membership, conversation style, discussions started, and helpful replies.
Please click here to learn more about this program.
I hope this helps! Please let us know if you have additional questions.