To do this, login to your Hubpages account. Once you login, click on the link my account on the top right hand corner. This will load up the statistics page for your account. In the grey middle section of the page, look for the link URL trackers. Click on the URL trackers and you can see your tracking code.
You can also you this screen to create other tracking codes as well. The maximum number of trackers you can create is 20.