So, i cant find the board settings . What happend? Go to your board, then select more (•••) > Board settings.
I select my board then go to (...) and appear other option, "manager yours rule"
If you created it, then you are an admin of it.
Given that, then ff there is no "configure" option for it, as in your screen-shot, then it is not a Software Kanban board, it is a board that comes with a "Next Gen" project, which do not have configuration options.
There's nothing else I can tell you - if you are an admin (which you are if you created the board), then you have "board settings" as the first option in the ... menu at the top right. For "classic" boards.
If you create a next-gen project/board then there are no settings and hence no option.
What do you have in the ... menu?