how do we take print on scale, both imperial and metric scales in AutoCAD?

What do you mean "take on scale"?  Do you want to print a drawing "to scale"?Are you printing from model space or from a layout that utilizes at least one viewport?

Hi
Kanishka, at first select the paper size according to the size of your drawing.
In the ‘Print’ dialog box select the appropriate scale that you need for your
drawing. After that select PDF option.For metric scale: For imperial scale: