Yes, you can upload a maximum of one hundred invoices at a time, MHT-Support.
Importing multiple invoices at once helps maintain consistency in how the invoices are recorded and ensures that all relevant data is accurately uniform.
Here's how to import multiple invoices:
Go to the Gear icon, then choose Import data.
From the Import data, select Invoices.
You can follow the steps provided on the screen.
Before you begin, add any new products, customers, and suppliers, and prepare a spreadsheet with your invoices. For the requirements for your invoice spreadsheet, check this article: Import multiple invoices at once in QuickBooks.