You need to review your business entries and on the screen that says Do you have any of these other business situations? make sure the I have money invested in this business that I'm not at risk of losing box is not checked, assuming that applies to you.

Otherwise, at risk means you have money invested in the business that you haven't withdrawn or taken a deduction for. For instance, if you put $50,000 in the business and deducted a loss of $25,000, you would be at risk for $25,000 in the business, what is left over. If you see a question regarding at risk, answer it based on that formula.
QBI is qualified business income. For the most part, it is the net income of your business for the year less any business losses carried over from the previous year. If you could clarify where you are asked about that we may be able to help you better.
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