Sleep Score for shift workers' Daytime sleepers?

Apple Watch and the Health app do tie Sleep Score to your configured Sleep Schedule, not the time of day or whether you sleep at night versus during the day. However, while you can set a daytime schedule and get accurate tracking, Apple currently allows only one active sleep schedule at a time—you can’t maintain separate schedules for day and night.

How Sleep Score Works

• Sleep Score factors: Apple Watch calculates Sleep Score based on sleep duration, consistency, wake-ups, awake time, and sleep stages (REM, Core, Deep).
• Schedule dependency: You must set up a Sleep Schedule in the Health app or Sleep app on Apple Watch. This defines your target bedtime and wake-up time, which the system uses to measure consistency.
• Daytime sleep: If you configure your schedule for daytime hours (e.g., 10 AM–6 PM) and wear your watch, Apple Watch will track your sleep just as it does for nighttime sleepers. The algorithm doesn’t penalize you for sleeping under sunlight.
• Single schedule limitation: Apple’s system supports one schedule at a time. You can edit or adjust it, but you cannot run two parallel schedules (e.g., one for night shifts and another for weekends)

tell Apple hhttps://apple.com/feedback

I would make some points. First it is well known that shift workers do not get as good a sleep as 9 to 5ers and if you want as good a score then it may be a misrepresentation.

Secondly, I personally never measure a bodily function that cannot be improved by my own actions. Sleep scores are a fad IMHO.

It isn't your concern whether they need to track their sleep. Your personal preferences and needs don't apply to everyone. This especially applies to people who were recommended by a health professional to use sleep tracking features.