I received a foster parent tax credit paper in the mail, I need to know where do i enter the information

If the child was with you for more than half of the year, you would be eligible to claim them for Child Tax Credit as long as no one else would be claiming them. 

The Child Tax Credit is worth up to $2,000 for each child who meets the following requirements:

• The child is younger than age 17 at the end of the tax year.
• The child is your son, daughter, stepchild, foster child, brother, sister, stepbrother, stepsister, grandchild, niece, or nephew.
• You claim the child as a dependent.
• The child doesn’t provide more than half of their support.
• The child lived with you for more than half of the year.
• The child is a U.S. citizen, U.S. national, or U.S. resident alien.
• The child doesn’t file a joint return with anyone else, unless the only reason they file a return is to claim a refund of taxes withheld or estimated taxes paid.

Or, you may be able to deduct your unreimbursed foster care expenses as a charitable donation. The expenses are deductible if the agency or organization that placed the child with you can receive charitable donations (so your local social services department would not qualify).

@jcontello15