Chromebooks run Chrome OS - assuming there is a camera as shown in the guides, its use would be under control of the Operating System or by using an application (likely in Google Store).
Perhaps someone who actually seen one of these can offer advice.
Product introduced July 2019
Because the computer is last year's model, it is for sale as such - for example, the HP Store does not likely carry it any longer. You might / should be able to get detail information from the merchant from which you intend to purchase the computer.
Reference and Resources – Places to find help, solve problems, and learn about your Device
NOTE: Content depends on device type and Operating System
Categories: Alerts, Warranty Check, HP Drivers / Software and BIOS, How-to Videos, Bulletins/Notices, How-to Documents, Troubleshooting, User Guides / Manuals, Service and Maintenance Guide (Replacement Parts and Procedures), Product Information (Specifications), more