Visit the uploader form in your site admin : http://example.com/wp-admin/theme-install.php?tab=upload to get WordPress plugin uploader form.
Upload the victheme_core.zip first if you don't have VicTheme Core Plugin installed on your server as the plugin won't work without it.
VicTheme Visual Candy
Upload the victheme_visualcandy.zip to install the visual candy plugin.
Visual Composer must be installed before this plugin can be activated and working properly. The WP Bakery Visual Composer plugin is not included with this plugin and must be purchased separately.
Bundled with theme
If this plugin is bundled with themes, you can skip this step and check on the theme documentation on how to install the plugin properly.