I received 1099-K from my Amazon business, but saw another answer to use Schedule-C, instead of 1099-K (as I'm a sole prop. LLC) which one is the right section to use?

[JulieCo]

Report the 1099K income using the steps below.  The income from the 1099K, plus all of your other self-employment income and expenses, will be reported on Schedule C in your tax return.

Type Schedule C in the Search box and then select the Jump to link. This will take you to where you can enter any cash, personal checks, credit card payments, or cryptocurrency (Form 1099-K) related to your self-employment. You may first be asked some general questions about your business. After you answer them, you’ll be taken to the Let's enter the income for (your line of work) screen where you can enter this income as Other self-employed Income.

See the sample screenshot attached below.

[shahjehan-hakim]

Thank you. I'll do that, but do I need to jump to Schedule-C or keep following the steps and it will ask and populate the required information. Just want to keep it simple and follow all steps as I'm doing it for the fist time.

[JulieCo]

Certainly!  Just keep following the steps as you are being led, and, if you need to go back to the section later, you can use the information in the answer above.