There's no way you can have a Child Tax Credit that large. The maximum is $1000 per child. Do you have 27 children?
You may be seeing other types of "Tax Breaks," such as the $4,050 Personal Exemptions, or the Standard Deduction. These are subtractions from income, before the taxes are calculated. They are not tax credits or refunds.
https://ttlc.intuit.com/questions/1901539-how-do-i-preview-my-turbotax-online-return-before-filing
