This may relate to the approach app and the whole gamin approach ecosystem rather an the S70 in particular.
I would like to know my course handicap before I start a round. In the app (not on the website?) I can see what my course handicap was for a round after I play it by going
Scorecards > select a scorecard > kebab menu > scorecard settings
And it displays what my course handicap was for that round after I have played it. I want to know that before I play.