The easier way for me to see what my profile URL is is to click "my profile" at the top right of HubPages and copy the URL. You can also just remember that all the home page URLs look like http://hubpages.com/@your name. Mine is http://hubpages.com/profile/glassvisage.
If you want the URL for a Hub, the format is http://hubpages.com/hub/Hubname. You can also copy and paste the URL at the top, or click "link to this page" at the footer of the HubPage.
If you know about URL tracking, you can add a tracker to your URL to get referral points every time someone visits your page. To find your personal URL tracker, go to "my account", then "URL Trackers". To insert it into your URL, just add an underscore and the tracker right after the hubpages.com. For instance, my tracker is xgyc91scxpdw, and so my URL with the tracker is http://hubpages.com/profile/glassvisage.... Same thing with Hubs; I just made a Hub about getting a car if you can't afford one, and the URL with the tracker is http://hubpages.com/hub/How-to-get-a-car-when-you-...