Is there any way to check what payment method I selected for my refund?

To revisit the TurboTax refund option section, see these instructions: How do I change my refund method?

No, I’m wondering if I can get the account info of the direct deposit to confirm if it’s correct. I need the last four digits of my account

If you have not yet filed, you can update your direct deposit number by completing the following steps while in TurboTax:

1. Select the orange Take me to my return button,
2. Once inside your return, click File in the top right,
3. Complete Step 1 if you haven’t already,
4. Then, click Revisit or Start next to Step 2,
5. Select  In my bank, then click the blue Continue button,
6. You may update your Bank name, Account type, Routing number, and Account number on this next page.

I have already filed. I need to verify the bank account info that I sent in. But I can’t even access my return.

Please read Help article for information on how to verify payment method.