@spidersspiders1212 looks to be a known issue with S20 series in Canada: https://www.google.com/search?q=esim+manger+disabled+s20&rlz=1C1CHBF_enCA920CA920&oq=esim+manger+disabled+s20&aqs=chrome..69i57j33i10i160l3.6103j0j7&sourceid=chrome&ie=UTF-8#ip=1.  Seems like Samsung have it disabled, for some reason.  

Aside from getting another phone, you can flash it to an American based firmware. That will enable esim but from what I've read, a couple minor features (such as long distance spam) won't work if you do. But maybe there's a better firmware option for it