A bit unsure where to put this,so feel free to move it.
If you search for Samsung Notes in the Microsoft Store you will find it but the download option is only available from a Samsung device. So you’re out of luck with your Surface, or so I thought. But today I installed Sammy Notes on my antediluvian Surface Pro 3.
All I had to do was open the Command prompt as administrator and execute
winget install “Samsung Notes”
respond in the affirmative to two Y/N questions and whaboom now I have it on my Surface syncing with my Samsung tablets.
This should probably be under some Spoiler tag.