Good morning. I ask you where to find a tutorial.pdf to learn how to use "screen4" for my Mach3. I don't speak English and I don't understand your video tutorials. Thank you.

I don't think there is a PDF tutorial for Screen4 - I may be wrong.

But there is a section on screen design
in MACH2 document called Mach2_6.11_Custom.pdf  (section 3.1)

Here is the link to the above document;  https://www.machsupport.com/wp-content/uploads/2013/02/Mach2Mill_6.11.pdf