First , don’t use delay in event tick for this purpose. Better to set timer (by custom event for example) at event begin play, that loops every 1 second (set looping checkbox). Then drag execute line from your custom event to whatever you want that loop to do.
Second, once you remove the widget from parent, it no longer exists and neither do the variables in it (like Timer_out or Saniye). That means if you call on this variables from another blueprint - it wont read them because the widget is invalid (you removed the widget).