I'm assuming you're talking about your 2019 IRS refund?
If you paper-filed, expect a long delay (more info at https://www.irs.gov/refunds).
If you e-filed and it was accepted, you should call the IRS but don't call them today - they're swamped. Wait a few days then call. Instructions on the link I posted above.
Currently, many taxpayers are experience delays receiving refunds due to IRS staffing shortage and office closures due to COVID-19. You can check the status of your refund here: Where's My Refund?
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