Let me share some information to help correct your W2 in QuickBooks, @tonyamoles-river.
To begin, let's fix the issue in your product. Then use any payroll reports you need to fill out the W-2c form outside QuickBooks. To do this, see the General Instructions for Forms W-2c and W-3c section in General Instructions for Forms W-2 and W-3.
Let me share these articles so you can read more details about this payroll item and how it's being reported in the tax forms:
Feel free to comment below if you need more help to report SCorp insurance in box 14. I'd be willing to jump right back and help you again if you need it. Stay safe!