Where would you go to opt in to the Product Ratings program?

To opt in to the Product Ratings program, you must navigate to Google Merchant Center, as this platform serves as the central hub for managing all product-level data and supplemental programs beyond standard listings. Within the Merchant Center, you can find the "Programs" section under the "Growth" or "Marketing" tabs, where you can sign up to aggregate customer reviews and display star ratings on your Shopping ads. While Google Ads is used for bidding and the product feed contains the raw inventory data, the administrative control and data integration for third-party or direct review feeds are handled exclusively through Merchant Center to ensure that ratings are accurately mapped to the correct products across Google’s surfaces.