What is the minimum routine maintenance my car needs?

There isn’t a traditional maintenance schedule in the owner’s manual.
Honda vehicles use a maintenance computer, the display will show A, B, 1, 2, 3, 4, 5, 6, or 7.
The chart in the manual shows the Maintenace for each code displayed.
Example below.

This link will show the maintenance codes for the vehicle you select from the scroll down;

Maintenance Minder | Maintenance Schedule | Honda Owners Site