I still do not know what you are even asking.
TurboTax makes no calculations about social security withholding whatsoever - it simply used the box 3 and 4 values that your employer puts on your W-2. The only time TurboTax calculates the Social Security tax is for self-employed taxpayers that file a schedule C. Employers withhold SS tax if any.
Simply look at box 4 on your W-2 to see if they took out anything.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
