a schedule C loss may be utilized in the year of the loss. you have to figure out whether you had a Net Operating Loss for the year of the Schedule C loss. Use form 1045 schedule A to calculate whether or not you have an NOL. if so that gets reported on the following year on the Turbotax carryover worksheet line 14 which will carry the NOL to schedule 1 Line 8.
https://www.irs.gov/pub/irs-pdf/f1045.pdf
note in order to carry forward an NOL from 2019 you had to make an election on your timely filed 2019 return to forgo the NOL carryback. if you didn't and have an NOL for 2019 it must be carried back 5 years to 2014. any not utilized in 2014 gets carried forward to 2015 and so on. since Turbotax no longer supports the app for 2014 - 2017. so you would need to seek out a tax pro if this is your situation.
