If you made an over-contribution of $800, TurboTax should have also calculated that and informed you of it. If you had a high deductible health plan all year and are under 55, your contribution limit is $3,600 if you have a self-only plan or $7,200 if you have a family plan. It is an additional $1,000 if you are 55 or older.
When TurboTax calculates that you have an overcontribution, you would answer that you will withdraw the entire amount by April 18, 2022. TurboTax will then add the over-contribution as additional income on Schedule 1, Line 8e.
If TurboTax did not calculate the over-contribution, I would check your entries. You may have inadvertently said you had a family plan when you had self-only coverage, or if you were not covered all 12 months, you may have included some months where you did not have coverage.
@formoey
