As part of the Unified Community Platform project, your wiki will be migrated to the new platform in the next few weeks. Read more here.
Points are gained by editing pages on the wiki. To view your current level, visit your user page. There are many levels. You can edit pages where you see  next to section headings. You can also click the Edit tab in the upper right corner if you do not see any  buttons. Respect the rules when editing, creating, etc.