Oracle's F37 repo isn't available yet, but the latest RPM
(VirtualBox-7.0-7.0.4_154605_fedora36-1.x86_64.rpm) works fine in F37, you just have to
install it manually. This is common up to a few weeks after each release. It's also
common for the latest RPM name to show an older Fedora version, they don't update that
unless necessary, so even when the F37 repo is enabled it will probably contain the same
"fedora36" RPM.