Which stimulus are you asking about?  If you used the recovery rebate credit then the 1st and/or 2nd stimulus amount is part of your tax refund.    If you mean the 3rd one----only the IRS can control that---we cannot give you a timeline.

TurboTax cannot track your 3rd stimulus or tell you when it will arrive.  The IRS is issuing 3rd stimulus checks on its own timetable.

You can use the IRS Get My Payment site to see what is expected for your 3rd stimulus check:

https://www.irs.gov/coronavirus/get-my-payment

https://www.irs.gov/coronavirus/get-my-payment-frequently-asked-questions

And----I should ask---do you know that your refund has been approved?  Are you seeing "approved" on the IRS site----or are you confusing "accepted" with "approved?"  They do not mean the same thing.

https://ttlc.intuit.com/questions/2840013-does-accepted-mean-my-refund-is-approved