No, not to any significant extent. I speak Hungarian and have very frequently passed through that small part of Transcarpathia where Hungarian is still spoken, and I have rarely encountered an ethnic Slav who learned Hungarian to proficiency. The language of interethnic communication in Transcarpatia was generally Russian during the Soviet era, and even remained such into the post-Soviet era, though Ukrainian has naturally gained ground.

And again, most of the Rusyn population in Ukraine is living far enough to the north or northeast that they have no contact whatsoever with the Hungarian language. I don’t think you have any actual knowledge of this part of the world.