This fund can be held in any of the types of retirement accounts you mentioned and also in a non-retirement brokerage account, so the particular fund does not identify the type of account that holds this investment. Ask Vanguard what type of account holds this investment. Traditional IRAs, Roth IRAs, traditional 401(k)s and Roth 401(k)s are all different types of retirement account.
The term "qualified retirement plan" means different things depending on where the term is used in TurboTax; the term can include or exclude IRAs depending on the context. What part of TurboTax are you working in that is asking about qualified retirement plans?
Enter amounts shown in box 12 of your W-2 only into box 12 of TurboTax's W-2 form, nowhere else in TurboTax.
If you contribute to a retirement plan at work, those contributions will be reported on your W-2 and you do not enter them anywhere else in the program.
An IRA is a retirement account that you would open for yourself at a bank or broker, and make contributions by check or direct deposit from your bank account. A 401(k) or 403B is an employer sponsored retirement accounts that can only be contributed to by payroll deduction. A 401(k) and an IRA are not the same thing, they are under different IRS regulations and have different rules.
private IRAs or workplace retirement accounts can hold almost any kind of investment instrument, so the name of the investment fund does not tell us anything about what kind of account it is held in.