Let me provide some info on where to find shipping and product test fees in QuickBooks, @1231 4613 1578 079.
If you're referring to where you'll put the shipping fee when creating a sales order, you can place them on another line item. To do this, ensure to create first a service entry for the shipping fee.
Here's how:
Select the Sales menu and choose the Products and services tab.
Click New.
Choose Non-inventory or Service.
Enter the details of the fee.
Lastly, click Save and close.
Once done, you can add the newly created item to your sales order. Let me show you a sample screenshot for a better view:
Additionally, I've added some articles to help you manage purchase orders in QuickBooks Online: