I doubt UA will short-check your bag as that will raise questions about a re-fare of your ticket (and could be very expensive).
If checked through, you would not see your bag(s) until it/they arrive in VCE.
As to arrival in MUC, you will have to go through immigration as you are entering Europe and the Schengen zone ... and then customs in VCE with your bag(s).
Is this one-way or part of a return?
If the latter, then the rest of your itinerary will be cancelled.