Form 1099-NEC is Non-Employee Compensation which is the same as Self-Employment.
Since you were not an employee of the company you performed work for, that company did not withhold FICA tax (Social Security).
When that happens, you, as the self-employed taxpayer, pay the FICA as "Self-Employment" tax.
You do file Schedule C and also can claim expenses you incurred for that income.
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