It is called as Hubber score. The more the Hubber score, the better. The highest score is 100, which you will see on some of the most popular Hub author's profile. The Hubber score depends on various things like quality of hubs, good writing, well formatting, interaction with other Hubbers, helping and supporting new hubbers, and commenting strategy on other Hub authors Hubs and many more things.
Hubber score is completely different from Hubber score which you see on their profile page. And Hub score also depends on various things and highest Hub score is 100. Thus, the more the Hubber score, the better.