I'm surprise Microsoft doesn't have a OneDrive link by now.
Anyway, I haven't played with it much recently, but you publish and share and you would need somewhere to store the link for use.
OR you could create a GitHub to put them on. (let me check that, I cannot publish at this school I think it's blocked, but you can import from github, never tried it.)
You could use Scratch to program them too, or Kodu, or Python, Mu, ...
loads of tehm coming along.
It might be best to have a look at and the email link for advice, see if anything is coming up https://microbit.org/teach/
(I am assume you are using makecode)