How can I see my TurboTax fees?
https://ttlc.intuit.com/turbotax-support/en-us/help-article/intuit-account-billing/review-fees-turbotax-online/L1XnIzgzg_US_en_US?uid=m682vq7k
If your TurboTax fees are higher than expected, you can reduce them by removing add-ons (BEFORE you e-file) :
If you are referring to an Underpayment Penalty fee, review the TurboTax article Why am I getting an underpayment penalty to try to reduce or eliminate it.