I received a form 5498 and have an amount in Box 5 (FMV of account) where do I report this info on my return.

[RaifH]

Generally, you do not have to report this information on your tax return. You only need to know the FMV of a retirement account for tax purposes if you are taking a distribution from it and a portion of that distribution would be nontaxable.

If you would like TurboTax to track the basis of your retirement account, you can do so in Federal > Deductions & Credits > Retirement and Investments > Traditional and Roth IRA Contributions. This only tracks your basis in the account, not the fair market value. If it is a traditional IRA, you only have a basis if you have made nondeductible contributions. 

If it is a Health Savings Account, the only time you would need to track the basis for tax purposes is if you over-contributed and are subject to a penalty. In that case, the penalty is based on the smaller of what is in your account or the amount of your over-contribution.