How to publish your website
When you're ready to make your website go live, or publish, navigate to:
Settings >
Site Availability > and select
"Public." You will need to be subscribed to a Squarespace plan in order to publish, so if you haven't yet, click "Upgrade to Publish."
Squarespace also has a helpful site launch checklist that you can reference for additional information:
https://support.squarespace.com/hc/en-us/articles/360022518252-Site-launch-checklist