Hey @andolad,
Sorry for the delayed response. In order to make use of those products, you would have to detach your Expo project and either use the standard Firebase SDK library or the react-native-firebase https://rnfirebase.io/ library.
As for the fabric question, you can read a response I posted here: How to add CrashAnalytic to the my expo project Make sure to search the forums for your questions/issues just in case someone else has posted something similar!
Cheers,
Adam