Did you not look at the form before you mailed it in? You have not mentioned which state, so we can only guess. MN?
To check the status of the rent credit in MN
To obtain the refund, the taxpayer must have a CRP, Certificate of Rent Paid (CRP), for each rental unit lived in during the year. The taxpayer's landlord is required to deliver a completed CRP to the taxpayer no later than January 31st of each year.
You will need the CRP to determine your refund, if any, and you must include what is called a Form M1PR with the CRP when it is filed. These forms have to be printed and mailed in to:
Minnesota Property Tax Refund
St. Paul, MN 55145-0020
TurboTax will prepare the Form M1PR for you to print. Towards the end of the step-by-step interview for Minnesota you will reach the Other Forms You May Need screen. To have the M1PR prepared and made available for printing, make sure you check the Property Tax Refund (Form M1PR) check box on the Other Forms You May Need screen, then follow the prompts through the end of the interview.
No, TurboTax does not send it. YOU have to mail it. If you did not do that ,then it has not even been filed. Go back to your account. You might need to click on Add a State to get back in to the account. Then print out the necessary pages from your pdf and mail them to MN.