There are no fees. Period.
TurboWallet does not charge any fees, but the blockchain that the tokens live on do charge small fees that are unavoidable.
GoChain standard fees are approximately 0.000042 GO or $0.000002 USD and don't fluctuate too much since there has never been gas wars.
Ethereum standard fees fluctuate quite a bit, but at the time of this writing they are 0.000084 ETH or $0.021 USD. You can see real time Ethereum fees here.