The web-page displays: Geographic Restriction -- Fox Nation is not currently available in your location.
Currently, Shaw does not offer the "Fox News" TV channel to Shaw TV subscribers.
While reading this message, scroll-down, to see:
and then click the "Your Voice" hyperlink, to send a request to Shaw to offer that TV channel.
If you have a VPN on your smart device (phone, tablet, etc.) set your VPN to a US server then visit the Fox Nation website mdk references above. You can then sign up for the service. Watch it on your device, or cast it to your TV if you have a smart TV.
Shaw does offer FOX News. I have had it on Shaw for over a year. Fox Nation you can't get but maybe with VPN as per below comment.