I don't think you need to do anything with nested scroll views, I'd create one vertical recycler view and then populate that recycler view with different items, some of which will be horizontal recycler views.
Take a look here on how to handle that with linear layout manager
https://stackoverflow.com/questions/28460300/how-to-build-a-horizontal-listview-with-recyclerview
One caveat, I haven't done android dev in a couple of months now, so there might be something newer than my approach, but this would be my first try.