How to get a Read More in page builder

the readmore works in the same way as in a default editor, it splits the article in 2 parts
the readmore button is automatically created in front by your blog layout (the com_content, or what you are using) and controlled by the css of it

OK, I get it, I will tackle it another way. Thank you.

you can also use the Blog addon in Page Builder CK to render your articles, then you can control the styles of the readmore