CODE EXAMPLE FOR CSHARP

how to set a objects position to the mouse unity

//In 2d/UI you can move the object to your mouse position by writing this in a script and then adding it to the object you want to be at the mouse position also put it in the void update spot
transform.position = Input.mousePosition;

//or in 3d
transform.position = Camera.main.ScreenToWorldPoint(Input.mousePosition)