You can acquire VIP points through various methods in the game, including: 

-Daily login, increasing the consecutive days of logging in, will earn you more VIP points.
-Click on "Acquire Points" from the VIP screen, where you can see and use the VIP points items in your backpack.
-You can also purchase VIP points items directly with gold and use them immediately.
-Using VIP point items directly from your backpack, which can be obtained through events, missions, etc.