If you are being claimed as a dependent on your parent's returns, you will need to file a separate return with this income. This is considered other self employment income over $400. The IRS considers anything in box 7 to be self employment income.
In TurboTax, you will indicate that somebody else can claim you as a dependent, at the personal information section.
However, if you had expenses related to this income, you can deduct them to lessen the tax liability on the income.
The following link might be helpful in understanding the IRS requirement to claim income:
https://www.irs.gov/pub/irs-pdf/p17.pdf
[Edited: 02.17.2018 6:11 PM EST]
