@Smaforte
Look at the return and the worksheets carefully ... $500 would be for an dependent over the age of 16 so how old was your child ?
If younger than 17 then look at your tax liability ... the non refundable portion of the credit is limited to your federal tax amount adjusted by other possible non refundable credits used. Then look at the form 8812 to see how the refundable portion is calculated.
If your refund is different from past years then review the 2018 & 2019 returns side by side ... which lines changed and why.
