The Site DA score is an number created in the company moz.com that provides clues about its "strength" and relevance of websites for a certain field or sector. It's a logarithmic number of points, usually between zero and 100. It predicts the way a website's site will be ranked in results pages of search engines (SERPs). The more points, the greater the site's DA.

https://www.softseotools.com/domain-authority-chec