The recommended screen resolution for UiPath robots is not specified in UiPath’s documentation. However, the screen resolution of a UiPath robot will default to 800x600 on many virtual machines.
Check out the thread
To increase the screen resolution of a UiPath robot, you can try the following:
• Edit UiPath.settings.
• Edit the robot settings in UiPath Orchestrator.
You can find more information about how to set and increase a UiPath robot’s screen resolution in this video