How can i set a player's currency to a value i want?

So , im working on a game for a group and i want to add Points (games currency) to some players . Im curious if i can make a GUI where i can write the players name and the value i want to add to his currency or something in the studio where i can set a player's currency value to what i want. Can someone help me please? I do have a datastore but it is made special for the shop in-game.