default or selected kernelversion does not have config value CONFIG_BT_SCO.
Result is shown for kernelversion 6.2.5
SCO links support
configname: CONFIG_BT_SCO
Linux Kernel Configuration
└─>Networking support
└─>Bluetooth subsystem support
└─>SCO links support
In linux kernel since version 2.6.12
SCO link provides voice transport over Bluetooth. SCO support is
required for voice applications like Headset and Audio.
required for voice applications like Headset and Audio.