In your "Pro Search" search results, show ratings can be found in the upper right corner of the summary box for each event and on the full show details page as well.
Any event or promoter that has been rated, will have yellow stars that you can click to view the ratings. Because our database is so large, many events & promoters have not been rated yet. Only Pro members have access to view detailed ratings.
Show Ratings Tip:
A good way to check on a promoter that you're not familiar with is to use the "More by this Promoter" link that's to the right of the promoter name -- clicking on this will bring up all the events listed by that promoter, so that even if a particular event is unrated, you can quickly scan to see how the promoter's other events rate.