After google signUp how will we get details of the user signed up

after signing up to the application using the google signup the response contains

access_token
expires_in
token_type=Bearer
state
id_token

with this how will i get the email id first name and last name …
kind of information to use in the application

The id_token is a JWT that contains claims of the user. You need to validate the token, and read these claims, in your application. Please read through the documentation for more information: https://auth0.com/docs/tokens/id-token