If you've logged in from a computer before and checked that it remembers you, you may be able to log in from that computer without a verification code. Once you're in your account, you can turn off 2-Step Verification until you can retrieve the verification code.
- Go to your Google Account.
– On the left navigation panel, click Security.
- Under "Sign in to Google", click 2-Step Verification.
- Under "Backup code", click Provide or Show code. You can print or download your code.