You can get a list of sheets by using the “get” method on spreadsheets:
sheet_metadata = service.spreadsheets().get(spreadsheetId=spreadsheet_id).execute()
sheets = sheet_metadata.get('sheets', '')
title = sheets[0].get("properties", {}).get("title", "Sheet1")
sheet_id = sheets[0].get("properties", {}).get("sheetId", 0)