All verified sellers sell cards in a mandatory format, which includes a CVV code. The data itself is also necessary for the card number, the name and surname of the cardholder. Otherwise, you can only use it in online stores, which do not require entering a security code.
There are such shops, but you need to look for them.
Ask the seller to replace your card with a valid card that will include the CVV or CVC code, or ask for a refund.
You can also buy a card from another seller, there are a lot of them on the darkmarket. Absolutely everyone sells cards with complete data.
Most likely you were simply deceived.
P.S. You can also try to generate a CVV number in free services, but the chance that it will be valid is very small and I will not advise you to do it.
Were you provided with only the CC number itself and the name and surname of the cardholder?
