Hi Antanelle,
Turbotax has a great W4 calculator which you can which will create the W4 form for you:
https://turbotax.intuit.com/tax-tools/calculators/w4/
From the information you gave me, your income level filing as head of household with 2 dependents is telling you that you do not need to have any tax withheld from your pay.
You can adjust your W4 to have more tax withheld from your pay . This would result in a refund. However, withholding extra from your pay will reduce the amount of pay that you take home in your paycheck.
You may be eligibe for other credits which would result in an income such as the child tax credit or the earned income credit.
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