Unable to answer "What are the opening hours here?" – Saint-Norbert (Town Hall) – https://osm.org/node/4616805909 via StreetComplete 62.1:

Salle municipale Réjean-Laporte, l'hôtel de ville est au 4 rue Laporte

Attached photo(s):
https://streetcomplete.app/p/323958.jpg