If your virtual card is a virtual debit card or prepaid card, since this card account is linked to a current account or checking account, you can transfer money easily from a virtual card account to any other bank account that you would like to do. Another way to transfer money from a virtual debit card is via e-wallets. You can link your virtual card to PayPal or any e-wallet you prefer and then transfer it to your bank account or other e-wallet accounts.
In case your virtual card is a virtual credit card, you cannot transfer money because funds are stored in a credit account and they are just available for purchasing items and products, without a banking transfer feature. However, you may try by linking your virtual credit card into PayPal account and transferring it to another PayPal account or to your bank account.