Use the Google Reviews app

The Google Reviews app pulls your business’s Google reviews and rotates them on your screens.

Steps

1. Open App Store.
2. Hover Google Reviews and click Add this App.
3. Name the app instance.
4. Connect to your Google Business Profile (sign in with Google).
5. Pick the location whose reviews you want to display.
6. Configure styling — confirm the exact options (count, layout, star rating filter) when re-screenshotting.
7. Save → appears under My Apps, add to a playlist.