Sure. Visit this thread:
https://vborg.vbsupport.ru/showthread.php?t=99570
Everyone should have it bookmarked, if they care to stay here at vb.org site.
What you are looking for exacly is this:
vBulletin API Basics: Creating Custom Pages & Misc.
https://vborg.vbsupport.ru/showthread.php?t=98009
That should get you started in no time.
If you have questions, feel free to ask, we will help you.