Tag new Brand

Please help how adding new brand tag in database, so i can use it for multi nodes or area in future.
for example: Baskin-Robbins

Note that mappers can always add any brands to the map by hand – the OSM data model is based on free-form text.

However, given that you first asked this question in the “editors” subforum, I suspect you’re looking for the iD editor’s “name suggestion index”: https://github.com/osmlab/name-suggestion-index

(This question was also asked over here.)