The Company Portal app is a tool that provides access to corporate apps and resources from almost any network. However, before using this app, your company must already subscribe to Microsoft Intune, and your IT admin must set up your account. The app allows you to enroll to access corporate resources, browse and install company apps, view and manage all your enrolled devices, view IT department contact information, change your work account password, and unenroll or remotely wipe devices. It is important to note that this app requires you to use your work account to enroll in Intune, and some functionality may be unavailable in certain countries. If you have any issues or questions about the app, including your company's privacy policy, contact your IT administrator and not Microsoft, your network operator, or your device manufacturer.

To uninstall the Company Portal app, you need to unenroll your device from Intune first. You can follow the steps provided in the link to unenroll your device. Once you have unenrolled your device, you can uninstall the app like any other app.