How do I know what this number stands for and how do I determine the form name?
To reiterate: I have a number in the number box for line 2c but not form name in the form name box for 2c.
IRS Form 6198 is for At-Risk Limitations. Per IRS instructions, Lines 2a, 2b, and 2c report Gain (Loss).
For additional information, see the following TurboTax article: What Is Form 6198: At-Risk Limitations.
This answer did not help my particular situation... It references schedule C but I have no schedule C created under forms; any other suggestions?
Perhaps check to see if you have any of the other sources of income/forms referenced in the link are present: rental or royalty income (Schedule E), K-1 income (Schedule E, page 2), farm income (Schedule F or Form 4835), casualty or theft losses (Form 4684) or sales of business property (Form 4797).