Hello Paul Dougherty2, Welcome to the Microsoft Community.
I understand that you are having trouble opening Excel files on your iPad. Generally, if you open Excel and it directly takes you to an editing screen, you can click the back button in the top left corner to return to the main interface.
This interface is similar to the main screen of Excel on a PC or Mac. Here, you can select the third option, which is the folder icon, and choose an existing file from the cloud or your device to open.
If you encounter any issues during this process that prevent you from proceeding, please provide more details!Best RegardsEliac | Microsoft Community Support Specialist