Note: You must sign up for your analytics account separately as Website Builder does not include a Google Analytics account. Once you set up your analytics account, Google will ask you to verify your site ownership. You can do so by adding HTML code provided by Google to the Site header code section of your site, then publish your site. Once the site is verified, you can add your Google Analytics ID to your site.
Add a Google Analytics ID for Website Builder
From your Manage Site page, click Edit site or Site Design.
Click the hamburger menu on the left.
Select SEO/Analytics.
Enter your Google Analytics ID in the Google Analytics ID field.
Click the Set button.
A confirmation message will appear to confirm the changes.