Does anyone know how much or what segments of the Norway in a Nutshell from Bergen to Oslo would be covered by a Scandinavia Eurail Pass? I haven't found specifics in my search?
See this from RS: https://www.ricksteves.com/travel-tips/transportation/trains/norway-rail-passes
It should answer all your questions.
It doesn't cover the Naeroyfjord ferry or the Gudvangen-Voss bus. It gives you a 30% discount on the Flamsbana and covers the full cost of the rail segments on the mainline trains between Oslo and Bergen--which for most Nutshellers will be Oslo-Myrdal and Voss-Bergen.