Out of both Norwegian and Swedish, which language sis more useful in the Scandinavian countries, and elsewhere?

Denmark, Norway, Sweden, Finland, and minority pockets elsewhere. Thinking on taking one of the two up. I’m fluent in French, German, and conversational in Arabic. Lived on an American property in Saudi Arabia for 8 months.

What are the best forums to go to to discuss Swedish, Icelandic, Norwegian, Faroese, Danish language& culture?

Hi. I would like to know what are the best forums to go to to discuss Swedish, Icelandic, Norwegian, Faroese, Danish language & culture? I would like to get Scandinavian foreign language translations and info on these cultures. Please let me know. Thank you.