ok I found it in hwinfo while running crystalmark m.2.1 hits 72c with an average of 53c and m.2.2 hits 58c with an average of 43c m.2.2 is under the m.2 shield on my MSI Z270 Gaming M7 so it might be worth looking into coolers for them well at least one but if I can get them cooler I'd most likely do the same for both.
Going to fire up some gaming later and see if they get any hotter. Which I doubt as my games are on my samsung 1tb ssd the only game on my m.2's is star wars battlefront which should be on the games drive lol missed it during install.