Hi Arzini,

You can use the Print Later option to print all your invoices at once. Let me guide you how.

To create an invoice: 

1. Click Customers menu.
2. Select Create Invoices.
3. Fill in the necessary information.
4. Tick the Print Later box at the upper-part beside the Email icon.
5. Click Save & Close.

To print the invoices:

1. Click File menu.
2. Select Print Forms.
3. Choose Invoices.
4. Under the Select Invoices to Print window, it will show all the invoices in the Print Later mode.
5. Click OK.

However, if this is for re-printing, manually open the invoice and tick the Print Later box.

I have included this article in case you have other questions about QuickBooks: Manage Customers And Income.

If you have other concerns, just let me know. I'm always right here to help you.