Whether you receive a refund for claiming a Child Dependent is not an easy question to answer because there are many factors involved when it comes time to determine what and/or who you are allowed to claim.
Just to name one, first you must determine whether the Child is a Qualifying Relative or a Qualifying Child. This factor is important in determining Status such as Head of Household, Child Tax Credit, or Child Dependent Care Credit.
In order to determine whether the Child qualifies you for refundable credits, it would be best prepare the return so that all details are accounted for and you know exactly what you are getting. Or, not getting and TurboTax will tell you why.