The 58 thousand figure is the number of views of that page alone. If no one then clicks on a link to visit a sub-forum or topic then that will be the total number of views your forum has had.
However, it is far more likely that people have visited some sub-forums thousands of times, some topics hundreds, but other just a handful. You need to add together the views for every sub-forum and topic to get your total count.
Volunteer Helper - but recommending that users move off the platform!
Once the admin for GregHelp now deleted.