Display review star rating on Google search result for Drupal store

Our store is a drupal 7 based store. Currently the review star rating is not shown on search results. For example, when keyword "ru58841" is searched, our product (https://www.minoxidilmax.com/ru58841) is shown on the first page. However, it does not show the review ratings like other shops. If you can fix this issue, please bid this project and list the drupal store(s) you have done the same work before. Otherwise your bid will be ignored.