Bitcoin transactions sent with the correct fee take between 10-60 minutes when you are sending Bitcoins to your EscrowBtc Wallet. If your transaction is taking longer than this, please check that the fee is enough. Your Bitcoin transaction was most likely sent with a fee that's too low or the Bitcoin network might be experiencing congestion, in this case, transactions will take much longer to go through.
Bitcoin transactions have to be confirmed by the Bitcoin network before they are usable from the wallet they are sent to. You can read more about confirmations on the Bitcoin Wikipedia page.