Opening balance is at zero. how do I enter correct opening balance?

Hello angelika-m-waldo,

Welcome to the Community. QuickBooks provides a variety of tools and resources that help you get ahead with your accounting. I'll be happy to share more info so you're on the right track. 

In order to accomplish the goal you've reached out about, I encourage you to check out the following article that shows you how to: Enter and manage opening balance for an account in QuickBooks Online. You're welcome to ask questions as you browse through the article. I'll be one message away in case you need anything else. Otherwise, I wish you a great rest of the day!