How to add bookmark for the screen

i would like to add bookmark option to screen and show it in the bookmark screen can anyone can help

Here we go again

  1. Create a Bookmark Screen
  2. Place a FAB, button, menu option, etc. to all other screens (to use it as bookmarker)
  3. Set its event:
    a) store it in a list through TinyDB
  4. When Bookmark Screen initializes or when other component navigates to it, set up a listview containing the bookmarked screens (get list from TinyDB)

Can you give me blocks?

Is this correct? What to put in tag and value?