Tell TurboTax that the taxpayer did not receive any stimulus payments. That will put a recovery rebate credit on the tax return. The IRS will reduce the credit for any stimulus payments that were made, and send a letter explaining the reduction. Be aware that the person probably did get the payments, so you will not get the refund amount that is shown on the tax return that you file.
I assume that the person died in 2020 or 2021. If they died before 2020 they are not entitled to any recovery rebate credit.
