How to change font's size?

Unity Engine
1

I have a font and want to display it in different size.How should I do?(I want codes, thank you~!)

2

:o

3

I also want to know

4

Maybe you should input anothor font to the project

5

now I get the point of how to change font size.
just ajust it on the font inspecter in the project view.
but one font can only have one size at a time