No one here would know why you have not received your refund. Was your return accepted (if e-filed). If your return was accepted then TurboTax does not get any more information regarding your return/refund.
For Federal refund you can check the IRS website, Where’s My Refund.
https://www.irs.gov/refunds
If you have a State refund, you can check the status on yours State website.
