Note: this is a NewPoints plugin and therefore requires NewPoints to be installed on your forum.
Purchase Credits allows board administrators to setup points packages on their MyBB forum to be purchased by users.
I found this one some forum so gonna share here
1.8.x
Purchase Credits 1.2.1 (Works on PHP7)
Submitted by Coolyou, 07-07-2018, 09:19 PM, Thread ID: 94746
Thread Closed