Some file formats (e.g. html, png) will be viewable in your browser, and will appear as clickable links below that will open the file once you've fully extracted your archive. Other file types can be opened by their appropriate applications by navigating through the archive's directory. You can click on any folders that may be present to see their contents.
Data that are still in the process of being deleted are not included in your archive. Learn more about your deleted data.