"On May 6, 2024, the Product Reviews app will be removed from Shopify, and is no longer available to install. After this time, you'll no longer have access to your existing product reviews, and reviews from the app will no longer display on your store. To continue collecting and displaying product reviews on your store, you need to migrate to another product review app before May 6, 2024."
- Shopify Help Center
Check out this blog article to compare your options and find a suitable app for product reviews: Comparing Review Platforms: Who Does It Best?