SELECT T2.points_won FROM player_award as T1 JOIN player_award_vote as T2 ON T1.player_id = T2.player_id WHERE T1.league_id = "NL" AND T1.award_id = "Most Valuable Player" AND T1.year = "1990" AND T2.league_id = "NL" AND T2.year = "1990"
How much points were received by the NL league's most valuable player winner in 1990?