After you file


@abat5 wrote:

following. Mine says the same, I got a message on 2/1 saying it was accepted, but it is still pending on the IRS website 😕


After the tax return has been Accepted by the IRS (meaning only that they received the return) it will be in the Processing mode until the tax refund has been Approved and then an Issue Date will be available on the IRS website.
See this IRS website for federal tax refund FAQ's - https://www.irs.gov/refunds/tax-season-refund-frequently-asked-questions

 

Note - The 21 days is a target for the IRS, it is Not a guarantee.