your looking at form 8995-A which is not final for 2022. in addition, it is only applicable in situations where your income is above a certain amount and your aggregating activities - taxable income, before your qualified business income deduction, is above $170,050 ($340,100 if married filing jointly), or you’re a patron of an agricultural or horticultural cooperative.
line 17 part III
Complete Part III only if your taxable income is more than $170,050 but not $220,050 ($340,100 and $440,100 if married filing jointly) and line 10 is less than line 3. Otherwise, skip Part III.
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if your taxable income is too high you get no QBI deduction. that's probably why you say line 17 is blank.
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my test indicates form 8995-A works. income above those thresholds and line 17 is blank the QBI deduction is 0.
