It depends.
The IRS issues a lot of refunds within 21 days, but it could take longer.
IRS processing time and refund status
The online link is your best option to track your refund. I have attached a link with more answers from the IRS as to why your refund may be taking longer to process.
Federal refund questions
Also, be aware, the IRS operations are limited during the Covid-19 pandemic. Attached is a link with more information as to what departments are available to contact at the moment.
IRS operations
Please see the attached for more specific information as it applies to your particular state.
How to track my refund