You have not provided enough information. If you have a qualified child dependent then you can get several child-related credits like earned income credit, child tax credit and the dependent care credit. If your dependent is an adult or qualified relative then all you "get" is a $500 credit for other dependents.
And.....the child-related credits are calculated based on how much you earn from working, so there is no "set" amount that you may get.
Provide some details.
https://ttlc.intuit.com/questions/4499708-what-is-the-500-credit-for-other-dependents-family-tax-cre...
https://ttlc.intuit.com/questions/1900923-what-is-the-child-tax-credit
https://www.irs.gov/help/ita/does-my-childdependent-qualify-for-the-child-tax-credit-or-the-credit-f...
dependents
https://ttlc.intuit.com/questions/1900643-what-is-the-child-and-dependent-care-credit
https://ttlc.intuit.com/questions/1899157-what-are-the-qualifications-for-the-earned-income-credit-e...
https://www.irs.gov/credits-deductions/individuals/earned-income-tax-credit/use-the-eitc-assistant
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