1. Generate authcode with the below API

   https://accounts.google.com/o/oauth2/auth?client_id=YOUR_CLIENT_ID&redirect_uri=YOUR_REDIRECT_URI&response_type=code&scope=https://www.googleapis.com/auth/spreadsheets&access_type=offline

2. Generate access token with below API

   curl -X POST https://oauth2.googleapis.com/token
   -H "Content-Type: application/x-www-form-urlencoded"
   -d "code=YOUR_AUTH_CODE"
   -d "client_id=YOUR_CLIENT_ID"
   -d "client_secret=YOUR_CLIENT_SECRET"
   -d "redirect_uri=YOUR_REDIRECT_URI"
   -d "grant_type=authorization_code"

You can use generated access token to hit Googlesheet PUT Rest API.