how can i find my credit card number?

Call the credit card company and tell them you can't find your card and cancel it. If you can't find it then you can't know for a fact that you didn't lose it, so don't risk it. If you ask for the number over the phone they will not give it to you but you can request that they send you a temporary card through express shipping (1-2 days), make up an excuse like you have to pay your bill for your medical issue if they give you trouble.

You will struggle to find your whole number and even if you do, it probably isnt enough. It will be on your monthly statement. If you have these online, then download the printable copy and you will find it.

However, to buy stuff, you will need the cvv code on the back of your card along with the start expiry date.

Check your credit card statement they usually put the full number there. Lastly you can call your bank to see if they can provide you with the card information.

Statement only. But you will need the security code as well, which is not on any correspondence.