Form 2106 - i can account for all the 2019 entries i have made while inputing in tt except for line 4. under audit and need to fine source of the entry to detrmn if error

[Critter-3]

Did you save a PDF with all the worksheets ?   Do you not see the form 2106 worksheet in the bunch ?

Here is the line 4 instructions ... 

Line 4. Enter other job-related expenses not listed on any other line of this form. Include expenses for business gifts, education (tuition, fees, and books), trade publications, etc. For details, including limits, see Pub. 463 and Pub. 529. If you are deducting depreciation or claiming a section 179 deduction, see Form 4562, Depreciation and Amortization, to figure the depreciation and section 179 deduction to enter on Form 2106, line 4.

[Critter-3]

To see your actual entries you could employ the 2019 amendment program ...

• How to amend (change or correct) a return you've already filed