Where can i fine the cvv number ? Is there any expiry date for my verified paypal account ? Do i need to verify the paypal account again with the same credit card ?
You can see the image below to know what is CVV number. Basically it's the three digit number which you find in your credit card.
https://www.asprs.org/application/cvvnumber.htm
As I already said, make sure you have at least $1.95 in your credit card, otherwise you can't verify your PP. Once you verified your account, it will remain verified account forever, no matter if the credit card is expired or not.
Bookmarks