To sell with Google Shopping ads, you’ll first need to have an account in Google Merchant Center, which is the central “brain” of any commercial activities on Google. If you or your store already have a regular Google account, you can use your current account ID to open the account in Merchant Center.
If you don’t have a regular Google account, start here.
Once you’re past that step, you can start up a Google Merchant Center account.
Then verify and claim your store’s website URL in Merchant Center, so Google will know who is sending over the listings.
PRO TIP: Make sure that the domain you claim in Merchant Center also matches the domain in any product links you will be sending over
If those are different, you will either need to claim a different domain or replace the domain used in the feed.
You also need to sign up for Google Ads before you can send your product data to Google.