After you file

@Michael1972 Sorry-you are far too late to get the stimulus money as a "non-filer" --- The only way to get it is by filing a 2021 tax return.   You are not too late to do that for the 2021 $1400, but it is too late to get the stimulus money for 2020, even if you file a 2020 return.  The deadline for that was May 17, 2024.

To file a return for a prior tax year

 If you need to prepare a return for 2020, 2021, or 2022  you can purchase and download desktop software to do it, then print, sign,  and mail the return(s)

https://turbotax.intuit.com/personal-taxes/past-years-products/

You may also want to explore purchasing the software from various retailers such as Amazon, Costco, Best Buy, Walmart, Sam’s, etc.

Remember to prepare your state return as well—if you live in a state that has a state income tax.

https://ttlc.intuit.com/community/state-taxes/help/how-do-i-contact-my-state-department-of-revenue/0... 

When you mail a tax return, you need to attach any documents showing tax withheld, such as your W-2’s or any 1099’s.  Use a mailing service that will track it, such as UPS or certified mail so you will know the IRS/state received the return.

Federal and state returns must be in separate envelopes and they are mailed to different addresses.  Read the mailing instructions that print with your tax return carefully so you mail them to the right addresses.

Refunds for tax years 2020 or earlier have been forfeited and will not be paid to you even if shown on the tax return form.  But if you owe tax due, you will still have to pay, and you will be billed later for the interest and penalties owed.  TurboTax will not calculate the penalties or  interest.   That will be done by the IRS/state after they receive your return with your payment of the tax due as shown on the tax form(s).

When you mail a tax return, you need to attach any documents showing tax withheld, such as your W-2’s or any 1099’s.  Use a mailing service that will track it, such as UPS or certified mail so you will know the IRS/state received the return.

Federal and state returns must be in separate envelopes and they are mailed to different addresses.  Read the mailing instructions that print with your tax return carefully so you mail them to the right addresses.