You can't show live data (a widget) on the home screen of Veeam Reporter (the piece of Veeam ONE we are talking about).
You can go directly to the url of any dashboard or widget you like. Open a dashboard and look to the top right of the page for the URL. Look at each widget in the top right corner and see the URL there for just that widget. Pick your favorite report from the workspace and save it's URL. Create shortcuts for these and go straight to them anytime you want.
As far as the data being live - not really. Veeam Reporter is not the realtime tool. That's Monitor in Veeam ONE. The best you could do with Reporter is set a collection job for every 1 hour, so that's as "live" as you can get. Have you changed the default collection schedule in the configuration (top right of page header). If not, your current Reporter data is only being updated at 3 am every night.
Monitor is realtime but not a web based tool. Install the Monitor Client on a system, and then watch your favorite realtime graph / tab with it.