"Hey Google" App required

Hi - I would like to create an 'App' that connects to Google Home (and preferably Alexa) which if I (or anyone) connects a google account, the data stored in a google drive account can be read from a spreadsheet.
One example would be I upload a membership database from a club and I ask:
Hey Google - Tell me how much Joe Bloggs has on his membership card? ... or ...
Hey Google - What is the outstanding balance for Joe Bloggs?
This database could be uploaded manually or have a Zapier connection so that data transition can be as smooth as possible.
I see this as an iphone app and android app but may well need an online app or connection to set up an account.