This is a tracker for our JBCS release in RHEL-8. As discussed with the team we will only deliver 4 modules to RHEL-8 intended for use with the platform's httpd as we will not deliver JBCS httpd to RHEL-8
The 4 modules to be delivered are:
mod_cluster-native
mod_jk
mod_rt
mod_bmx

Modules are built as MW SCL, not in RHEL 8 AppStream

([text from JBCS-730) RHEL-8 httpd has its module directory in /usr/lib64/httpd/modules as you said. BaseOS httpd modules therefore are getting installed in /usr/lib64/httpd/modules.

Our modules are not BaseOS modules though (yet! Once there then we talk about it). For the moment being, our modules are modules coming with Core Services and follow all JBCS rules in regards to naming, directories, prefixes et cetera. Using /opt/rh/jbcs/root/usr/lib64/httpd/modules is correct to me. We are not speaking for mod_* that should be /usr/lib64/httpd/modules, it is jbcs-httpd24-mod_* and it follows all JBCS rules.

If you want to use them just add them to your httpd.conf.
For the reasons mentioned above, I'm closing JBCS-730