Hi
Did you take the intrument binnacle out on a damp day with the car outside ?
Left the car doors open for an extended period maybe ?
If so, its likely that moisture in the air when replacing the part has condensed on the inside of the glass as cabin temp has increased after fitting.
I would either run the cabin heater on full with the floor & feet vent slider shut for a good 20 mins with the car static.
Or you could get a hair drier on on the clear plastic facsia of the binnacle & evaporate the moisture.
The alternative is an obvious one requiring dis-assembly..in a garage with the doors shut ideally.
Cheers
Farrell