Cloud Datastore

Firestore is the next major version of Datastore and a re-branding of the product. Taking the best of Datastore and the Firebase Realtime Database, Firestore is a NoSQL document database built for automatic scaling, high performance, and ease of application development.

https://cloud.google.com/datastore/docs/firestore-or-datastore

Hence you only See Cloud Firebase (instead of Data Store).

Hope this helps!