A lot of system processes run all of the time, whether they have work to do or not. Typically, they would sleep, waiting for macOS to wake them up when another piece of code signals that there is work to be done.
On my Mac, running Sequoia, there is a biometrickitd process that is using 0.00% of the CPU. This is an Apple Silicon Mac desktop that would be compatible with an Apple Magic Keyboard with a Touch ID sensor. The man page confirms the nature of the process, although it does not provide much more in the way of detail.
biometrickitd(8) System Manager's Manual biometrickitd(8)
NAME
biometrickitd – biometric daemon
DESCRIPTION
biometrickitd provides support for biometric operations. It is not meant
to be invoked directly.
Darwin 23/11/15 Darwin
Your MacBook Pro running Catalina would be Intel-based. I believe that many Intel-based MacBook Pros which Apple released in 2016 or later had built-in Touch ID sensors – and a search of Apple Developer documentation suggests that there was biometric support in macOS at least as far back as early versions of High Sierra.
I would suggest leaving the process alone.