
Your products will appear in Google Shopping if they have product ratings. This is one of the most common ways for shoppers to search online for products. You can give searchers a rating to help them decide if your products are worth their time.
Google Shopping listings' star rating system makes it easy to compare multiple options and can increase the chances that you have a high rate of click-throughs from Google Shopping Ads. However, ratings are not visible on Google Shopping listings until you have met all the requirements.
In order to have Product Ratings appear in your listings, you will need to submit a reviewfeed to the Google Merchant Center. The reviews feed is an XML document that includes information about your products and reviews. To remain eligible, the feed must be updated on a monthly basis. Make sure you check it regularly!
It is important to ensure that all reviews comply with the following quality guidelines.

A quality review should share in-depth research and real subject-matter expertise. This will make you and your reviews stand out among the rest and bring in more customers.
This is a great spot to start. It's an easy way to build a strong online brand for your business. It can be used to collect testimonials from your loyal customers.
To get started, create a Google account. It can take several weeks for this to complete so be patient.
After you've created your account, you can create a Google Shopping ad campaign with the goal to drive traffic to your store or convert sales. Your reviews and average star rating should be included in the ad.
These ratings are also available in your Product Listing Ads, (PLA), or catalog. This can help you increase conversions from buyers searching for a specific product via Google. This feature is available for all countries in which Google Shopping is currently active.

Good reviews are essential for eCommerce businesses. The Google product reviews program can help increase sales and customer satisfaction. The program is easy to set up and requires a minimum of 50 reviews across all of your products.
Yotpo users can have their reviews automatically sent to Google. They will be displayed on your Product Details page on Shopping. You can also add user generated photos from your site.
How Product Review Program Works
Google's product reviews program is free and allows retailers to gather feedback from customers about their products. The program sends out emails to customers around the day they expect their purchase, and it asks them to rate the product they've purchased from your company.
After you have submitted a review the feedback will go back to you via email. You can also view it in Google Merchant Center. You can also use your feedback to refine your products.