The IRS issues most refunds in less than 21 calendar days.
Many different factors can affect the timing of your refund after they receive your return. Even though the IRS issues most refunds in less than 21 days, it’s possible your refund may take longer. Also, remember to take into consideration the time it takes for your financial institution to post the refund to your account or for you to receive it by mail.
Read more about when to expect your refund here: https://www.irs.gov/refunds/tax-season-refund-frequently-asked-questions