You should only publish your website once you are totally finished and want to put it live and online.
How to publish the website?
To publish your website, find the Publish option on the upper right corner of the editor. Once you have clicked on it, a pop up menu will appear asking you if you are sure you want to publish. By clicking Yes, a new notification will appear and you may have to wait while the the images are being generated.
Once the images have been successfully generated, a link will be provided where you can visit your website.