when you are in schedule C you need to enter the 475f info in the section for disposition for non-depreciable assets - use type H - ordinary
this will flow to 4797 part II as ordinary and the QBI section of schedule C in Turbotax
also in the QBI section of schedule C you must check off that this is a specified service trade or business (SSTB). this is by definition under reg 1.199A-5
this can limit or eliminate your QBI deduction because there are special income limits when engaged in a SSTB. review form 8995 where the QBI is calculated