Your Google Ads Customer ID is a 10-digit number that uniquely identifies your Google Ads account. You can find your Customer ID at the top right corner of your Google Ads account.
Google Ads requires an MCC for an external connection. This will connect all of the associated accounts under the MCC. If you don't have an MCC, you can create one in your Google Ads account.
Name and save the Customer Account IDs you want synced. Records from this source will have a "source" parameter equal to the name.
Your Google Cloud Project ID, and BigQuery Dataset ID can be found in your Google Cloud Console.
After the initial sync, you can open the spreadsheet to view and edit the data.
(Not yet connected)