TurboTax never knows about offsets to your refund. If there is an order for your refund to be seized then the IRS (and/or state) will be doing that and let you know later that they took your refund. The way to prevent your refund being seized for child support is to pay it when you were supposed to.
https://www.irs.gov/uac/tax-refund-offsets-pay-unpaid-debts
https://ttlc.intuit.com/community/refunds/help/what-is-a-refund-offset/00/26301
Reduced Refund https://www.irs.gov/taxtopics/tc203
NOTE: You can contact the IRS Treasury Offset Program Call Center at 1-800-304-3107 to ask if they have an offset for you on file. TurboTax would not have that information.
https://turbotax.intuit.com/tax-tips/tax-payments/who-can-garnish-an-income-tax-refund/L7cPPzDyc