In case if someone had the same question and needed some answers:
It did work fine, no overheating temperature remain almost the same. Speed is incredible fast, compared to old SandDisk x400(U/R speed about 500-550mbs) I see a big difference.
So
Asus ZenBook Flip UX370UA does support m.2 NVMe ssd from Samsung, it automaticly detected it in the bios as NVMe drive (there was only SATA option available before).
I hope it helps someone.