MozRank quantifies link popularity and is Moz’s version of Google’s classic PageRank algorithm. Pages earn MozRank based on the other pages on the web that link to them and the MozRank of those linking pages. The higher the MozRank of the linking pages, the higher the MozRank of the page receiving those links. In this way, it reflects a type of raw link equity for any given webpage on the Internet.
There’s no specific “good” or “bad” MozRank score, but higher generally means more — and more important — links point to the page, subdomain, or root domain.