If you were under age 55 at the end of 2023, you certainly have a $700 excess contribution based on the contributions that you mentioned. The source of the other $4,000 of excess that TurboTax is indicating is a mystery that you only be able to solve by looking at the details of Form 8889. Either you have an excess carried in from a prior year or you've made an HSA contribution entry beyond the $3,850 and $700 that you mentioned.
Also, if you are married, have a family HSA and your spouse also contributed and HSA, there could be and excess contribution when both spouse's contributions are considered together.
