Easy VC
You can earn up to 600 VC daily by simply using the MyNBA 2K18 mobile app. Another 500 VC can be earned from matches in the Quick Game, and the daily login bonus rewards you with 100 VC.
Simply simulate matches with SimCast in MyLeague mode to earn VC for almost no effort.
You can get up to 500 VC, along with other rewards, for answering a few questions in the NBA 2KTV interactive episodes. The episodes come out weekly -- so keep an eye out for them.
Go to the 2KZone when you are exploring the Neighborhood to earn VC. You can either answer trivia questions for 25 VC each or go to the betting machine to accurately predict up to 3 matches, each of them earning you 25 VC.