As long as you have a version control system in place (i.e., GitHub), the scorecard will help you — even if you're not using tickets. The basic checks look at best practices for branching, pull requests, and more, while the scorecard provides a roadmap for how your team can continue its path to maturity.
Yes, minware offers access controls for team-level and individual-level data so you can control whether individuals, managers, and executives have access to data inside and outside their team.
Yes, when viewing the scorecard report, you can select the specific metrics that are shown from a library of over 20 metrics to focus on the particular things relevant to your team.
You can find a list of all the metrics here.
If you are using a kanban process instead of scrum, most of the scorecard metrics are still relevant. There are only a few metrics that are specific to the scrum agile process.