default or selected kernelversion does not have config value CONFIG_IP6_NF_MATCH_MULTIPORT.
Result is shown for kernelversion 5.4.123

Multiple port match support

modulename: ip6t_multiport.ko

configname: CONFIG_IP6_NF_MATCH_MULTIPORT

Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>Network packet filtering (replaces ipchains)
└─>IPv6: Netfilter Configuration (EXPERIMENTAL)
└─>Multiple port match support
In linux kernel since version 2.6.12  
Multiport matching allows you to match TCP or UDP packets based on
a series of source or destination ports: normally a rule can only
match a single range of ports.

To compile it as a module, choose M here. If unsure, say N.

source code:
net/ipv6/netfilter/ip6t_multiport.c