Yes, you will need to report this income as self-employment income. You may not own a business, but your business if "you". You're considered an independent contractor. To enter the cash income you've earned, see the instructions below from a TurboTax FAQ. TurboTax will generate for you a Schedule C, and you'll also owe self-employment tax on your net income over $400 for the year. If you have any business expenses associated with this income, entering them will lower your tax liability.
"Am I considered self-employed?"
https://ttlc.intuit.com/replies/4771022
"How do I report income from self-employment?"
https://ttlc.intuit.com/replies/4801198
*** I am NOT a tax expert. I am a seasoned TurboTax user, and volunteer to provide assistance to TT users. Nothing I post is to be considered TAX ADVICE; I bear no legal liability for responses.***
