I want to invoice a customer but I don’t have any place to enter an invoice or estimate or receive payment on my screen

Let me provide you with the exact instructions to fix the invoice option on your home screen, ameritempservice.

You can delete and reinstall your QuickBooks Online (QBO) mobile app to refresh app's data and settings, which can resolve any glitches that may be causing the issue.

Here's how to delete a QBO mobile app:

1. Tap and hold down the QBO mobile app icon on your home screen.
2. Press the "x" that appears on the top left corner of the app icon.
3. Touch Delete.

To reinstall your mobile app, here's what to do:

1. Open the App Store and search QuickBooks Online.
2. Tap on Get next to the app icon to install the app.
3. Launch the app and sign in to your QuickBooks Online account.

In the meantime, logging in to QBO through a web browser is necessary if you're having issues with the invoice option not appearing in the mobile app. 

Moreover, you can check out this article on using templates in QBO and additional details to include in your sales forms: Customize invoices, estimates, and sales receipts in QuickBooks Online.

I'm determined to provide further assistance if you need me. I'll be here in the Community space. Ready to help you out again. Stay safe.