if you mean qualified business loss under IRC under 199A that's a special deduction that can reduce QBI Income for purposes of the 199A deduction. This QBI loss does not reduce regular taxable income. The QBI loss can reduce QBI income from a trust but then your QBI deduction is reduced resulting in more taxable income.
on the other hand, if you're talking about a net operating loss under IRC 172 that should have been utilized in the year of the loss to the extent you had sufficient other income. if there is an NOL carryforward it offsets any type of income on the 1040. Turbotax does not compute a taxpayer's NOL carryforward but Form 8995 line 16 (2022) does compute the QBI loss carryforward. Form 1045 Schedule A can be used to compute NOL carryforward.
