No, you will not get the refundable child tax credit if you did not have income from working. If your only income was Social Security you do not need to file a tax return unless you have a 1095A for marketplace health insurance.
Do not enter the SSA1099 for your child on your own tax return. Someday if the child has other income (after school job, etc.) and is filing a tax return, for that tax year he will need to include the SSA1099 on his own return. Until then, it does not get entered anywhere.
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