Node owners can earn action points by participating in certain action items, such as running a node for a minimum of 6 hours per day. This is called Proof of Action, which recognizes contribution and energy usage tied to a given blockchain. The Rewards page of your Switch Web App is where you will see a breakdown of the action points completed by your individual nodes. The points you earn determine the amount of Switch Rewards you earn. This is determined as a % of the action points you earned vs the total number of action points earned by all participants during that distribution period.
This will not be a 1:1 exchange of action points to Switch Rewards.