Let's first run an Account Quick Report to view the list of your transactions. Then, you can update your bank account's opening balance. I ca guide you on how to do it.
Go to the Gear icon ⚙️.
Select the Accounting menu.
Pick the Chart of Account tab.
Locate your bank account.
From the Action column drop-down menu, click the drop-down arrow.
Choose Run Report.
Set the date range to All Dates.
Search for the earliest deposit posted that is noted as Opening Balance in Memo/Description field to open the Bank Deposit window.
Edit the amount.
If you're not able to edit the amount directly on this screen, in some cases you can edit by selecting the Edit ✎ icon.
Click Save and Close.
Once completed, you can start reconciling your bank account. You can read through these articles to learn more about managing your open balance in QuickBooks: