Yeah there are two ways:
1- When the OP select u as the "best answer" u can see the thread in the thread tab of the right column.
2- Always that u are selected as the "best answer" u received an e-mail confirmation, u can do click on the link to go to the thread.
So there is no stat to track that then in the profile? Figured it would be something people would want to be shown in the public profile along with the post count. Something that can be added?