Hi there. An OpenStreetMap note will not add any data to the map. See the wiki on what you can expect with OSM Notes: https://osm.org/wiki/Notes.

If you're not sure how to use the editor, there are self-learning modules from https://learnosm.org.

If you want this quickly done for now, add a point with your OSM account and the OsmApp: https://osmapp.org/18.5646/120.7855 . You should be able to see the feature on the map almost immediately.