Please ensure Hugo is installed on your machine, as covered here Install Hugo
Hugo Shard is a premium theme and can be purchased here
Once you have purchased the theme simply extract the .zip file on your local machine. This which will create a new folder with a ready to go Hugo site inside the folder.
After extracting the theme for the first time, build the Hugo site. Run the following commands inside the folder.
hugo
For local development run Hugo’s built-in local server.
hugo server
You can visit http://localhost:1313 in the address bar of your browser to see the local development site.
Compile the site using the hugo command
hugo
This creates a folder called /public which contains the final static site. This is the folder which is served from a webserver.