I can show you how to print your invoices, @sussexelfquiltin.
You can print an invoice in QuickBooks Self-Employed from the Invoices page. You can click the drop-down menu under the Action column.
Then, click on the printer icon on the PDF page that appears.
However, to print multiple invoices in a single click is currently unavailable. You'll need to do it one-by-one. I can totally see efficient it is to print multiple invoices in one click. I'll be sure to take note of it.
In the meantime, you can check this article on how to manage your invoices: Create invoices in QuickBooks Self-Employed.
If you have other concerns or follow-up questions with your invoices, let me know in the reply section below. Take care and have a wonderful day!