To recover your youtube user name and password follow the below steps.
Go to YouTube.com and click the Sign In link at the top-right corner of the page.
Then the sign in page should appear.
Next Click either the Forgot Username link or the Forgot Password link.
Enter your username.
Enter the verification code from the multicolored text.
Be sure to copy it exactly, using uppercase or lowercase, as shown in the code.
Next Click the Reset My Password! button.
YouTube will then send an e-mail containing your password to your registered e-mail address.