You’re correct, I misunderstood the question.
VCV Rack for DAWs will include 2/2, 8/8, and 16/16 audio input/output variants (to match the different VCV Audio modules) as well as instrument/effect variants. See Ableton’s documentation for handling plugins with multiple outputs.
If you want to have multiple MIDI inputs/outputs, you can use the 16 channels offered by the MIDI protocol itself. Using VCV CV-MIDI or the other MIDI modules, you can choose a MIDI channel on each module and then filter by channels using up to 16 Ableton Live channels.