Q. How do I get the 500 on line 8j, of Schedule 1 (Activity Not Engaged In For Profit Income)?
A. It can't be done in TurboTax (except in the forms mode, not available online).
The best you can do it put it on line 1h of form 1040 (other earned income) or line 8z of Schedule 1 (other income). "Other income" is not earned income, for the earned income credit. Line 8z is the correct place to claim income from a "one time gig" exception to self employment.
Enter at the 1099-Misc screen in box 3, even if you didn't get a 1099-Misc
On the next screen Describe what the payment was for
On the next screen select "none of these apply"
On the next screen select "No it didn't involve work like my main job"
On the next screen select "I got it in 2023" ONLY (even if you get/got it in other years, this is a necessary workaround for the no intent to earn money situation)
On the next screen select No, it didn't involve intent to earn money
TT will put the amount on line 8z of Schedule 1 as other income
See http://www.journalofaccountancy.com/Issues/2009/Jul/20091639.htm