default or selected kernelversion does not have config value CONFIG_ATM_FORE200E_MAYBE.
Result is shown for kernelversion 5.5.18

FORE Systems 200E-series


Linux Kernel Configuration
└─> Device Drivers
└─> Network device support
└─> ATM drivers
└─> FORE Systems 200E-series

This is a driver for the FORE Systems 200E-series ATM adapter
cards. It simultaneously supports PCA-200E and SBA-200E models
on PCI and SBUS hosts. Say Y (or M to compile as a module
named fore_200e) here if you have one of these ATM adapters.

Note that the driver will actually be compiled only if you
additionally enable the support for PCA-200E and/or SBA-200E

See the file Documentation/networking/fore200e.txt for
further details.