Backlink Value is a ratio between the backlink page's authority (InLink Rank) and the number of links on it.
The higher is the page's InLink Rank and the fewer links there are on it, the more link juice a link from the page can pass to your site.
To check Backlink Value in LinkAssistant, you'll need to set up the Backlink Page and Verify the backlink first:
Next, for your convenience, add the columns to your workspace:
Select the backlink, click the button, and choose Page Info and Authority factors.
Once those are checked, Backlink Value will be calculated automatically:
If you click on the header of the Backlink Value column, link resources that are most beneficial for your site's ranking potential will top the list.