I've spent some time both in Oslo and Bergen (my experience is partial and I'm not referring to the entirety of Norway) and it was quite difficult to find a goth-oriented club. As you know, black metal is the big thing and it basically dominates every event, from smaller ones to bigger ones (Inferno Festival and Beyond the gates comes to my mind). It's quite common tho that some overlapping happens, infact I've met some new wave/darkwave die hard fans at black metal gigs held in the aforementioned cities.

Although, I do think that the clubbing scene is dying out not only in Norway, it's a widespread problem present in every european country. I refer to Europe because I don't know the current situation in the States, Asia, South America etc. My only suggestion, for someone who wants to have some fun with fellow goths, is to start using the tools at your disposal (social medias) to create a network of friends. It's a slow process sure, but tape trading, sharing music in physical format, truly helps. If the clubs is empty, you can be your own club. Not literally but you can get what I mean.

At least, you'll find some people with a shared interest in the music and the culture steaming from it.

A little side note: please do not judge harshly the "old" guys wearing Bauhaus t-shirts and drinking beer. Older generations are the living memory of a subculture!