Solved
I received a 1099-Misc. I don't think I should use Schedule C, since this is not a business
Since it was just a one-time thing and there was no intent to earn a profit, you can report the income as "other" income. Just make sure you answer the questions correctly in TurboTax regarding not earning the money in previous or future years, the work not being associated with your job and your intention of not earning a profit.
Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.