Nah,@OP is looking to know how he can know in advance what will be the fees if he needs to make a transaction from his/her Blockchain. com wallet.
He wants to know what influence the BTC fees and if there is an application that let you know the current fees needed in real time. That's it

@OP
You can use the link posted by @jseverson and @cryptjh but I suppose you wallet provider suggests the fee when you finalize a transaction.