The screenshot's size is 999x999. The value in bounds is relative to the screenshot's size.
The tree structure description of the current screenshot is shown:
    ScrollView;scroll;;[0,0,999,972]
        FrameLayout;; All files access;[0,0,999,248]
            ImageButton;click; Navigate up;[0,53,135,114]
        RecyclerView;focusable;;[0,248,999,602]
            LinearLayout;click;Markor|2.10.9;[421,275,577,389]
            LinearLayout;click;Allow access to manage all files;[0,406,999,471]
            TextView;;Allow this app to read, modify and delete all files on this device or any connected storage volumes. If granted, app may access files without your explicit knowledge.;[58,519,960,602]