Google Search Console now shows review snippets performance, enhancement and testing reports
Google search console has been updated with new reports
Rich snippet enhancement report – Available for those sites who have implemented reviews or ratings structured data. you can see errors, warnings, and valid pages for markup implemented on your site.
Rich snippet performance report – how well your rich snippets are performing in search. Review or rating marked-up pages appear on Google Search and Google Discover. Impressions, clicks and CTR of those results can be seen in GSC.
Rich Results Test tool – After adding Review snippets structured data to your pages, you can test them using the Rich Results Test tool. You can test a code snippet or submit a URL of a page.
Bubblecube 