To get started with the Google Sheets API, you need to follow these steps:
1. Create a project in the Google Cloud Platform developer console and enable the Google Sheets API.
2. Create credentials (Service Account Key) to access the API.
https://bot-t.com/faq/HELP/sozdanie_servisnogo_akkaunta
3. Issue access keys and configure the spreadsheets:
https://bot-t.com/faq/HELP/poluchenie_dannyh_tablicy_i_vernoe_zapolnenie_poley