After getting the tracking number, you can obtain a PDF. Regarding the PDF for the shipment, move towards the WooCommerce panel and click on the Orders tab.

Go to the WooCommerce panel, and click the Orders tab.
On clicking the ordered product, your ordered details are visible.
On the right side of the page, just below the tracking number, you will be able to see the Get PDF tab.

On clicking, Get PDF shipment PDF will be downloaded.