tree-style.json

{
  "version": 8,
  "name": "Overpass-treee",
  "sources": {
    "overpass-points": {
      "type": "geojson",
      "data": "overpass://Q/nw%0A%20%20%5Bnatural%3D%22tree%22%5D%0A%20%20(area%3A3606195356)%3B%0Aout%20meta%20geom%3B"
    }
  },
  "layers": [
    {
      "id": "tree",
      "type": "symbol",
      "source": "overpass-points",
      "minzoom": 12,
      "layout": {
        "text-field": [
          "coalesce",
          ["get", "name:he"],
          ["get", "name_en"],
          ["get", "name"],
          ["get", "species:he"],
          ["get", "species"]
        ],
        "text-font": ["Open Sans Cond Bold"],
        "text-anchor": "top",
        "text-offset": [0, 0.5],
        "text-size": 18,
        "text-letter-spacing": 0.2,
        "text-optional": true
      },
      "paint": {
        "text-color": "#43634d",
        "text-halo-color": "white",
        "text-halo-width": 1.5,
        "text-halo-blur": 1.5
      }
    }
  ]
}

It should be
overpass://Q/nw...
The Q was added at a later part of the implementation, sorry...

I added overpass://Q/nw..., and The circles displayed. But I want to show labels form species tag only and still not working.

Looking at the overpass data most tree don't have those, some are using the language tag.
Out of 10K tree only 74 has this tag, I think you should refine the query to bring only trees otherwise you'll hit the overpass turbo limit quickly...
Also the font that you have selected are not supported I think, try Open Sans Regular or Open Sans Cond Bold
Hope that helps...
Feel free to send a PR to improve the docs, or add that in the issue you reported the original problem.

הקוד עדיין לא עובד ב־ihm.
אני מקבל שגיאה במסוף:

Line 1: "type" member required

See the following gist:
https://gist.github.com/HarelM/5350902c7245a34ad1eaf69d02b732d0
Here is how it looks when I zoom in.

תודה, עכשיו זה כמו שרציתי. רק ביטלתי את השכבה של הנקודה ושיניתי צבעים.