I doubt whether you will find a LED replacement bulb that will fit. The front to back distance in the Scrambler headlight is very shallow and most LED bulbs require a lot of space at the back for their heat sinks or fans.
You can (could at least) buy complete LED headlight replacement assemblies made in China. Remove the glass and reflector assembly and replace it. The units were widely available on Alibaba and there was an American company who was rebadging them and selling them as their own. Use your favourite search engine and you should have no trouble finding them if they still exist.