TurboTax cannot track down your stimulus check. That check was issued by the IRS, not by TurboTax. If you did not receive the stimulus then you can put a trace on it with the IRS.
Check your IRS online account
https://www.irs.gov/payments/your-online-account
If you were issued a payment and have not received it, see How do I request a payment trace to track my first or second Economic Impact Payments?
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**