Hi there, fahad-shiningbra.
Welcome to the QuickBooks Community. I'll make sure to share details about having a QR code in all the invoices.
For now, there's no option to instantly create an electronic invoice containing a QR code in the QuickBooks Online International version. Please note that QuickBooks is continuously improving the product's features to meet our customer's needs.
Meanwhile, you can find and use a specific application that you might see outside QuickBooks or use a third-party merchant service that you can integrate to help you with what you need. This app could help you to make an electronic invoice including a QR code.
You may refer to this article to see details on how you can record a bank service charge as a negative amount using merchant service: Enter a bank service fee while using a third-party merchant service.
I'm just a comment away if you need insights into managing your invoices in QuickBooks. You can lean on me anytime.
