This screen is split into 3 sections:

Tap on any match to score. The Scorecard for that match will then display, unless the match is locked by another user (i.e. match is already being scored by someone else).

On iOS, swipe right to left on a match to show the ‘Remove’ option

On Android, press and hold on a match to show the ‘Remove’ option.

Settings can be accessed from the gear icon in the top left. The Grades screen (for non-club entities only) can be accessed from the Grades button in the top right.