Third-party apps
Some third-party apps offer the ability to receive Move goal credit (but not Exercise credit, due to programming / API limitations) on your Apple Watch for workouts that are undertaken whilst it is not being worn. For example:
Fitmanual - Complete the Move Ring every day on the App Store
Other such apps may be available in the App Store. To browse and search for this and/or other third-party apps with the results pre-filtered to include only those iPhone apps that also include an app for Apple Watch, use the Watch app on your iPhone. Apps can be searched by keyword or app name via the Search tab. Follow the instructions here to add and use compatible apps on your Apple Watch:
Use apps on your Apple Watch - Apple Support
Add data manually
Workouts can also be added manually to the Health app on your iPhone, which aggregates all health and activity data from your Apple Watch, iPhone and any other sources:
To add a workout, go to: Health Data (tab) > Activity > tap on Workouts > tap on the "+" sign (upper-right) > enter your workout data.
More information:
Use the Health app on your iPhone or iPod touch - Apple Support
Feature requests
If you would like to submit any feature requests to Apple, then you can do so here:
Feedback - Apple Watch - Apple
(You are not talking to Apple here - this is a user-based technical support community).