@marcoramirezh simply go to the IRS app - it'll take about 5 minutes to figure it out...
https://www.irs.gov/help/ita/whom-may-i-claim-as-a-dependent
Since the child is not a blood relative, you could only claim him as an "other relative" if these tests were passed
1)Gross Income Test: Dependent’s gross income (excluding Social Security) less than $4700
2)Support Test: Taxpayer provides more than 50% of person’s support for the year
3)Household Member Test: lived with Taxpayer for the entire tax year
if so, then the tax credit would be up to $500, presuming that the child has a Social Security number and is a US citisen or resident alien.
you would not be able to file HOH even if you could claim this child as there is no blood relationship.
