You can spend the money on your debit card anywhere Visa is accepted.
Just top up your VISA card with precious/crypto. This will automatically convert the coins of your choosing to fiat (eg. USD) at the point of sale, so you can spend it with one tap, just like with your standard debit card.
Find out how to top up your Kinesis debit VISA card here.
You can learn more about the Kinesis debit card program here.