Ordered list (numbering) from 10 and more and if font size is 15 or more there will be a gap after the number

Indeed. And what is the question?

how to solve it?

LibreOffice Help on Position and Spacing for Bullets and Numbering.

thank you, but in position tap I can’t find View - Styles

It is not on Position tab. It’s the other way around.

I kind of find a solution, in position tap I set numbering followed by (space).