RE: Send Netsuite Data to Google Sheet
Fair chance that if you have to ask, the answer is to look for an existing solution that integrates with Google Sheet.
The hard answer is to use N/search in combination with N/https to access the google sheets api. Depending on how you plan on authenticating, you may end up needing support for JWT, which will probably require a JWT package, or if you are very ambitious, the N/crypto module. I believe you have asked this question here enough times to realize that your question is very broad and not simple.