How can I trust an application, I have installed few apps related to my job, and its says iphone has not trusted the application or the company

Contact corporate IT Support, and request their assistance setting up enterprise developer trust for this iPhone.

Hi sulfathmjd,

Thank you for using the Apple Support Communities! As noted in the following resource that can help:

Install custom enterprise apps on iOS

Your organization can use the Apple Developer Enterprise Program to create and distribute proprietary enterprise iOS apps for internal use. You must establish trust for these apps before you can open them.

If you install an app by Mobile Device Management (MDM), trust is automatically established. If you manually install an app, you must also manually establish trust.

Apple recommends that you use an MDM solution to distribute the apps. This method is secure and doesn’t require user interaction. You can also install custom apps from a secure website that your organization operates. If you don’t install apps from your organization, download and install apps only from the Apple App Store. This is the best way to protect your iPhone, iPad, or iPod touch.

Hope this helps!

Have a great day.