If you are single and over age 18, you are required to file a tax return if you have more than $12,400 of taxable income. If you have less income than that, you can still file a return if you want to, and if you have tax withholding, you can file a return to get a refund, since the withholding will probably be more than your tax due.
If your income comes from self-employment, you are required to file if you have net profit of more than $400.
If you are 18 or less and can be claimed as a dependent by your parents, your filing requirement may be lower, especially if you have income from investments.
You can use this tool to check if you need to file.
https://www.irs.gov/help/ita/do-i-need-to-file-a-tax-return
If you attend college and pay your own tuition and are not your parent's dependent, you might qualify for a small credit, but the size of the credit will depend on how much money you earn from working. We can't really predict anything without knowing all your financial details so the best thing to do may be to start preparing a return and see what happens. If you aren't required to file and won't get any credits, you can stop the process without actually filing.
