For general information please visit the link below. We should be verifying our site using the option listed as 2 there.
http://www.bing.com/webmaster/help/how-to-verify-ownership-of-your-site-afcfefc6
Once we get the meta tag we should add we need to copy the "content" part of the tag, for example for the following meta tag:
<meta name="msvalidate.01" content="3F3C4F5A5B7E9D23AC02FF" />
We need to copy the "3F3C4F5A5B7E9D23AC02FF" without the quotes. Then go
Settings -> Store Settings -> SEO settings on the left hand side.
Put it in as the Bing Verification code and save. The system will
generate the meta tag on your website and it should verify correctly.