It can take a little while for Yoast SEO to work its magic. Once you've installed and activated the plugin, it will start analysing your site and working to improve your SEO. However, it can take some time for all of the changes to take effect. Depending on your website's size and complexity, it could take a few days or even a few weeks for Yoast SEO to really start making a difference. But once it does, you should see a noticeable improvement in your site's search engine rankings. So patience is key! Keep using Yoast SEO and giving it time to work, and you should eventually see some great results.