The IRS releases most refunds within 21 days after your e-file has been accepted (received). You can track the status of your refund by visiting the IRS Where's My Refund? site. You can check your status every 24 hours as they do update daily - usually in the overnight hours.
Please see the below FAQ on how to track your state return.
https://ttlc.intuit.com/replies/3300211