Short answer
Search the workflow action picker for Google Sheet. The Google Sheets integration adds Create Google Sheet row and Update data in a Google Sheet. Map each value by choosing the sheet's column header. Values from earlier actions, such as Format data or Validate and format phone number, can be sent as action outputs.
1. The actions
Searching the picker in my demo portal, where the app is installed. I browsed without adding an action.

2. Tips
- Keep the header row stable; mappings use the headers.
- Clean values first with Format data.