How do I delete a customer from the customer list on the quick books app I’ve got the same customer down a couple of times due to the spelling of their name being wrong and I want to delete the wrong ones and just keep the one right one ?

Hi there, ktequestrian-yah.

Let me get the help you need in deleting your customer contact in QuikBooks Self-Employed (QBSE)

Here's how:

1. Click the + icon. 
2. Select Create invoices.
3. Tap Add customer. 
4. Locate and select the customer you want to delete.
5. In the invoice page, hold customer name until you'll be routed to Edit customer page.
6. Hit Remove button.
7. Select Remove to confirm you want to delete the recipient.

For future reference, here's an article on how you can create your invoice and steps to activate the payments option: Create invoices in QuickBooks Self-Employed. 

Get in touch with me if you need further assistance in managing your QuickBooks account. I'm always here to help. Take care.