Open an existing spreadsheet or create a new one in Google Sheets. Select Extensions at the top and click Apps Script to open the same editor as discussed above.

Just open Docs or Sheets and go to Extensions, then click on Apps Script. A new tab with the Apps Script editor interface will open.

How to use Google Sheets to create, work with, and collaborate on spreadsheets — and how Gemini, Google’s AI assistant, can give you a head start.