The address to your Website will contain the following parts:
https:// - Hyper-text Transfer Protocol Secure
sites.google.com/ - The Web-address for Google Sites
view/ - Denotes Viewing a Site, not editing or something else
Sitename - The name you gave your Site
So, in the case of this Website, our Address is: https://sites.google.com/view/freewebsite-101
You can also display your Website from the New Google Sites Editor
Click the down-arrow on the blue Publish button and select View published site.
Then look at the Web-address in your Browser and it should match the format specified above.
Just click on the Address at the top of the Browser Window and Copy the Address.
You can then Paste it in an Email, Text or Post etc.
It will appear as a Link in whatever media you have chosen.