Player pawn move to mouse location NOT using simple move to location

I’ve been to every thread and answer page that i can find and no one seems to have an answer for this, i simply want to use my mouse location to get the player pawn or character to move to it accurately using pathfinding, the mouse location part is fine i figured that out on my own, but the simple move to location stops short my goals are as follows

  1. use the mouse location as the destination for the pawn to pathfind to
  2. move the PLAYER pawn/character to that destination root

my main goal is for a movement cost (in action points) to be used when the player moves to a destination, sort of like divinity 2

i would very much appreciate any help on this