Display name publicly as

I don’t understand you question. Do you just want to add the post author name to your SEO title tags?

yes, I want autor post name. The same text as edit autor in wordpress is “Display name publicly as”

Use %post_author_nicename% in the Post Title Format field – https://semperplugins.com/documentation/title-settings/#title-format-fields

Thanks for advice, but %post_author_nicename% is not same as “Display name publicly as” in user edit. I was try it,
Jirka

What do you have that set to under Edit User?