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.