I'd carect iphone 4 verification code

Marking your own post as Solved may prevent others from trying to help because they think you have fixed your problem.

You need a verification code or there isn't a place to enter the code?

If you need a code, see if anything here helps.  If necessary, you can use account recovery as explained in the link at bottom of the article.

Verification code - how to get one and sign in with two-factor authentication.   

If you don't have a place toe net the code, if you see a password box, enter the password (ABC) followed by the code (123) or ABC123 (no spaces).