The Display Rating add-on allows you to display rating by filtering content and excerpts inside the loop based on review type. The add-on also include a shortcode to display rating inside the loop, this comes very handy tool as it doesn’t require more than enable the option within the add-on settings page. The Display Rating works on all review types included in the WPRichSnippets plugin (rating, percentage, votes and user aggregate reviews). See a demo of the  Display Rating add-on .