You Can Now Rate Services and Apps Inside Google Assistant
A small but important update is rolling out to Google Assistant on Android. You can now rate apps and services leveraged by Assistant to give your feedback on how well it works or doesn’t work. It is a cloud side update so as long as you have the latest Google app installed, you should be good-to-go.
To access the apps and services in Google Assistant so you can rate them, long press the Home button on your phone then press the blue envelop in the upper right corner to open up the Assistant Explorer. You will then see suggests services and apps that tie into Assistant as well as services that you already use.