how to get the mouse's position on the screen?

Questions & Answers
1

hello I am wondering how do I get the cursors X and Y position on the screen?

2

Have a look at the Script Reference and/or use the search function, please. Such simple questions are easily answered…

Anyway:

Input.mousePosition

Gives you the mouse position in px from the bottom-left corner (although the screen has opnly two dimensions, it is of the Vector3 type).