I want to use a vector tile layer as an operational layer to lay over a basemap. I'm choosing vector tiles because the layer has thousands of polygons which would load very slowly as a feature layer. Problem is, I can't figure out how to add a legend for the vector tiles. Is there a workaround for this? Using version 3.19
I don't think that functionality is supported yet.
See this Idea: Vector Tile Layers Querying/Legends
There's also a question here asking for vector tile layer legend support.