default or selected kernelversion does not have config value CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX.
Result is shown for kernelversion 6.5.1

NSA SELinux maximum supported policy format version

configname: CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX

Linux Kernel Configuration
└─>Security options
└─>NSA SELinux maximum supported policy format version
In linux kernel since version 2.6.19 (release Date: 2006-11-29)  
This option enables the maximum policy format version supported
by SELinux to be set to a particular value. This value is reported
to userspace via /selinux/policyvers and used at policy load time.
It can be adjusted downward to support legacy userland (init) that
does not correctly handle kernels that support newer policy versions.

Examples:
For the Fedora Core 3 or 4 Linux distributions, enable this option
and set the value via the next option. For Fedora Core 5 and later,
do not enable this option.

If you are unsure how to answer this question, answer N.