We can work this out together why you're not seeing the View Statement button, nonyanon.

The availability of a certain feature in QuickBooks depends on the level of subscription. The View Statement option is only available in QuickBooks Online Plus, Advanced, Accountant, and QuickBooks Live users. 

You may ask your client to upgrade to any of the subscriptions I mentioned above for you to view the statement.

Also, you can check this article to learn about how to import bank statements to help you reconcile an account: Get bank statements directly from your bank when you reconcile.

I'm always here to keep helping if you have any additional banking concerns. Happy holidays!