To update/establish your stats here you need to login to the web site with your IGO member account name. Then under your username find the “My Account” link and click it. Your account/profile/contact (and other) information will open.
Click the “Edit” tab so you can make changes to this information. Click “Profile” to get to your details. Please fill in your geocaching.com username where prompted then scroll down to the area where you can put in your stats. Enter any/all values as you like.
While you are in the edit screens I would also encourage you to fill in other information like your zip code, cache “favorites” and more.
As always, scroll all the way to the bottom of the form and click “Save” or all your changes will be lost.