Squarespace is a website that allows you to build website easily, without the need of any prior knowledge of HTML/CSS.
"Squarespace is the all‑in‑one platform to build a beautiful website."
Squarspace offers many services, like domains for sale, their easy to use website builder, and they also offer experts to help you design your enterprise site.
This section will show you how to configure the settings for your Squarespace domain
Go to the domain you wish to verify
You can see your owned domains here
Go to advanced settings
Here is where you can assign subdomains, point/forward subdomains
To verify your domain, you will need to have this record in the dns management
Refer to the Google Search Console page to learn how to get to this step
5.Input this record
For your custom google site url
6.Add & save
Save and give it time to propogate