One of the advantages of using Shopper Approved is that your ratings and reviews are syndicated directly into Google Adwords.
However, for your star ratings to show up, you need to meet the following 3 criteria:
You must have an active Google Adwords campaign running for your website.
Your campaign type in your Google Adwords account needs to be set to "Search & Display Networks" or "Search Network only."
You must have at least 100 post-fulfillment (full) survey reviews of 3.5 or higher with comments in the last 24 months from the same country.
Google updates about once a month - sometimes more, sometimes less. We say a good guideline is that 4-6 weeks from when you meet the minimum requirements (listed above) is when you can start expecting to see stars in your Google Ads.
If you want to check if you've met these requirements, you can filter for "full survey date (for comments)" in your dashboard here:
You can then replace "yourwebsite" with your domain in the link below to view your Seller Ratings Page:
If you'd like to learn more about the Seller Rating ads extension, you can check out this article from Google:
https://support.google.com/google-ads/answer/2375474