There's a blog on how to login to vB5 from an external site.
https://www.vbulletin.com/forum/blog...n-your-website
For your other requests, you would use the same technique used in the login code from the blog above. You would use the vB5 API to retrieve data from vB. It's relatively easy if you have programming skills especially PHP and if you know vB5 API. Otherwise, you would have to hire someone.