default or selected kernelversion does not have config value CONFIG_NFT_SET_BITMAP.
Result is shown for kernelversion 6.7-rc3

Netfilter nf_tables bitmap set module

modulename: nft_set_bitmap.ko


Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>Network packet filtering framework (Netfilter)
└─>Core Netfilter Configuration
└─>Netfilter nf_tables bitmap set module
In linux kernel since version 4.5.1 (release Date: 2016-04-12)  
This option adds the "bitmap" set type that is used to build sets
whose keys are smaller or equal to 16 bits.

source code: