Question: destiny 2 how to level up nightfall rank?
Answer: you have to get the bonus threshold of 100,000 on a nightfall. when you get the 100,000 on say tree of propabilities, you get 1 nightfall rank. another example is say you get 143,000, you would get 1.4 nightfall rank. you get 1 rank point per 100,000 nightfall score combined.