You will need to contact the bank that issued your card (via email or over the phone) and request for the 4-digit code. Just let them know all the necessary details as to what this code is for and how does it look like as described by Paypal, and your bank should be able to get back to you with the code.
NO. The 4-digit code is found within the transaction detail on Paypal sample withdrawal transaction. That code should reflect on your bank statement among other transactions. More likely you will get this statement in 28 days to month depending on your billing cycle. If you don't want to wait that long, then you need to contact your bank's customer support either via email or phone call for them to check on your account statement. They should provide you the 4-digit code right away.