How do I activate my custom email from Google Workplace

I transferred domain name to Squarespace from a 3rd party- just the name, no email- and signed up with  Squarespace for a website with basic Business plan.  Signed up to Google Workplace- first year free- to get custom email for website.  I did not use a contact form on the Contact page.  The email address sits in the middle of the page.  What/how do I do to activate the email so I receive enquiries from any viewer?