Once you request to be treated as an S-Corp you should have started "acting" like an S-Corp. This means 50% of all the money you paid yourself out of the S-Corp should have been reported as payroll. If your election date approved is not until 2022, you should not file as an S-Corp for 2021.
If you were approved with an election date in 2021 and you did not report your payroll correctly, you need to file the forms required and report the payroll now and accept the penalties. This will then give you the correct information to file your Form 1120-S for 2021 and use the K-1 to properly report the pass-through income to your personal return. To do this, you will likely need to file an extension for your personal tax return.
@charluzze
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