If your site is published, you can find your domain name or address in two places, here's how to:
On the My Yola Dashboard, your website address will be displayed under the site's name in the My Sites list.
1. When you are in the Sitebuilder, go to Settings > Publishing.
2. You will see your website address next to the link: The domain of your site is.
If your site is not published, click the Publish button and follow the steps until your site is published. More information can be found in this tutorial: Publishing Options.