This documentation-page contains some pointers and advice about comparing performance of those two UI-frameworks:
https://developer.android.com/develop/ui/compose/migrate/compare-metrics
For anything specific, you would have to design your own benchmark, since any given UI implemented in both frameworks is likely to look and behave differently from another, based on theme, styles and Material-design library used.
If you look at the lowest level, like drawing directly on the Canvas, I believe both use the Skia-engine, so I guess the drawing-performance itself should be roughly the same.