I'm in Zofaria right now and I'm almost done with it and I have a quest in the Nidavellir and I have started GH yet the quest will give me the death spell skeletal dragon , is it worth doing GH and if so how long should it take me to gain access to the Nidavellir
Yes, it is worth doing Grizzleheim and especially Wintertusk as there are a few spells to be earned by completing these places. Depending on your level I'm sure you can blast through to Nidavellir in no time. Good luck!