Store credits are non-transferable and there is no cash alternative. Once you redeem your store credit, the balance stays on your account until it is entirely spent.
To redeem your credit, enter the credit value in the box on the payment page and click 'APPLY STORE CREDIT'. Check that your store credit has been applied under the order summary and then click 'PURCHASE'.
Currently store credits can only be redeemed on the website gothelist.com.