Click on “tools” then “export”. You can export only Trivia Quiz, only Perso Quiz, and even your players database.
By default, WordPress exports content using XML format. It’s not the best way for a human brain. If you want to use the output in Excel for instance, you should install this plugin : WP All Export (it’s free). It allows you to convert the XML output to a nice CSV output.
If you want to import quizzes on your site, go to “tools” then “import”. It you never installed the “WordPress Importer“, you must do it now.
Once it’s done, just go back to “import” and select your xml file. Wait a few seconds, and it’s done!