It depends. If it is from a W2 you don't need to file except to get back any withholding taken out in box 2 or 17.
If you got a 1099NEC you have to file and pay self employment tax on it.
if you are married and your spouse is filing you have to file or add it to a Joint return.
Do you need to file a return?
https://ttlc.intuit.com/community/filing-and-paying-taxes/help/do-i-need-to-file-a-federal-return-th...
IRS Do I need to file?
Do I Need to File a Tax Return? | Internal Revenue Service
See IRS pub 501 for filing requirements
https://www.irs.gov/pub/irs-pdf/p501.pdf
