how to do invoices

Are you attempting to find an invoice for a purchase made from Apple, or to create invoices for goods or services that you sell?

If the latter:

• you might create an invoice template using the Apple Pages App - and use the template to manually generate invoices
• you might search for a suitable invoices/accounting App within the Apple App Store.
• your might consider using online accounting software - and use this to generate and manage your business invoices.