In Hue Essentials, go to the devices tab, select your bridge, and tap Resources. There you can see your resources. Here you can find an explanation of the resources:
Physical lights connected to your bridge. Some lights like the Hue Beyond contain multiple lights and use multiple light resources.
Sensor resources can be physical switches and sensors like the Hue Dimmer Switch or a Hue Motion Sensor. Some sensors like the Hue Motion sensor contain multiple sensors (motion, light level, temperature) so they use multiple sensor resources.
Sensor resources can also be virtual (memory) sensors. They are used when configuring smart controls or when creating effects.
The groups resources are rooms, zones, groups, and entertainment areas. They are visible in Hue Essentials on the home screen and under entertainment. If you cannot see all groups, check in the Hue Essentials settings if you have any hidden groups.
Scene resources are scenes you use in Hue Essentials. Using a scene on a smart control or in a schedule can use additional scene resources. Effects in Hue Essentials also use lots of scene resources.
Schedule resources are used for the schedules in Hue Essentials. Schedule resources could also be used when setting up smart controls.
Rule resources are used for smart control configurations, schedules, effects, and many more features.
Resourcelink resources are used for smart control configurations, schedules, effects, and many more features.
Use these options to remove data from your bridge.
This will remove all data from your bridge except for rooms, groups, lights, and smart control. So this will delete all scenes and smart control configurations for all apps including the Hue app.
Delete all effects
This will delete all effects created in Hue Essentials, Living Scenes from the Hue app, and other similar features of other apps.