1) Quick Import:
I have created a simple plugin which imports the WooCommerce dummy data on your site within a few minutes. Check below video:
Quick – Download plugin – Sample Data.
2) Manual Download
you can use below XML files to import dummy content of the WooCommerce.
As of version 1.5.3, the plugin comes bundled with dummy data that can be imported to instantly give you a working store with products to test different WooCommerce features.
Below is the list of all (XML) files for download.
After download goto Importing WooCommerce Dummy Data.