Once you’ve successfully installed and activated the child theme now you can Import Demo data that comes with the theme.
You may have seen this Notification after Child theme installation.
You just have to click on Begin Installing Plugins.
Now Select all plugins and Select Install from the Dropdown and click on Apply Button.
Once that Done click on Return to Dashboard.
Now Hover over to Appearance and click on Import Demo Data.
Now Click on Import Demo Data Button to import all the Pages and Customizations etc.
And all the Demo Data will be imported in a few minutes, Depending on your internet connection. When it’s done it will look like this.