It helps if you want to ask a question, to be precise in what exactly doesn't work and what you've tried already. This to prevent a lot of unnecessary back and forthing before tackling a problem.
-What doesn't work? Your microphone? The audio in Ableton or audio in general?
-what have you already tried? Installing the audio interface driver/manager? Did your manager sees the audio interface?
Just like any DAW, audio interfaces need to be set up. Just like any other peripherals like mics, midi hardware etc.
Have you already checked Ableton guides? Let me know.