Nosto for Shopify supports ratings and reviews powered by Yotpo. In order to begin leveraging Yotpo ratings and reviews in Nosto, you'll need to install Yotpo's app for Shopify.
Configuring Nosto to use Yotpo
Once you have installed and configured Yotpo on your Shopify store, Nosto begins collecting the rating and review metadata automatically. There is no additional configuration required on Nosto's end.