Hi Umesh
I believe this question is not Mendix-related, but more applicable on the Google Drive API. Please have a look at the designated Google documenation pages:
https://developers.google.com/drive/api/guides/about-sdk
https://developers.google.com/workspace/guides/get-started
https://developers.google.com/drive/api/guides/api-specific-auth
Please set up everything you need on Google-side, then start authorizing with your Mendix application with the user/service accounts you configured and the API key.
Good luck!
Kind regards,
Leander