I not so recently (about six months ago) followed the instructions at https://www.virtualmin.com/documentation/web/multiplephp to install PHP 7.3 on CentOS 7. So I figured that
yum list php74 would show me PHP 7.4, but neither it (nor a bunch of other searches using yum) nor a search at https://www.softwarecollections.org/ show 7.4 being available from SCL. (Oddly, even PHP 7.3 doesn't show up on the website, but it does under yum.) The SCL repos are enabled on this server.
Am I missing something? Why isn't it there? Do I need to use the Remi repo? Speaking of Remi, even his website refers to 7.4 being in the SCL: https://blog.remirepo.net/post/2019/05/22/PHP-7.4-as-Software-Collection