Hey there, @Yoyo000,

I appreciate your time checking the Community today. I can share some information about adding items on your invoices.

At the moment, we're unable to copy your Excel data to QuickBooks at one action. To add these items and its quantity, you'll need to do it one at a time.

Also, make sure the information you're copying is already in your Item List and has the same description or characters. Here's how: 

1. Click the Customers menu.
2. Choose Create Invoices.
3. Fill out the Customer: Job, Date, Invoice #, and all necessary information on the sales transaction.
4. In the Item column, copy the item from Excel or click the drop-down to choose one.
5. In the Quantity column, copy or add the information manually.
6. Click Save & Close.

That should get you on the right track, @Yoyo000. I've added here a related article to guide you with the steps: Create an invoice in QuickBooks Desktop

Thanks for your time. Please feel free to let me know if you have any additional questions. Have a wonderful day!