Vuukle allows you to set score for page views, comments and shares. In order to do this, go to home page of Vuukle dashboard, and select your site. In submenu, select Settings. Click on Advanced Settings, and under Set Scores section enter values for page views, comments and shares, and click on Save.
This is formula for calculating author score:
Article score = (Number of page views * Page views score) + (Nuber of shares * Share score) + (Number of comments * Comments score)