cant connect phone to itunes- ive trusted the computer, entered my passcode and itunes still responds with "not trusted"

Hi jimmm1234,

Welcome to Apple Support Communities. I understand that you're having trouble with the Trust settings between your iPhone and computer. I know it's important to be able to connect your device and use it with iTunes; I'd like to help. I'd suggest using the steps below:

"If you tap Trust or Don't Trust but doesn't accept your answer, or if the Trust alert won't appear, follow these steps. Try again after each:

1. 1. Make sure that your computer has the latest version of maOS or the latest version of iTunes. 
   2. Disconnect and reconnect your device from your computer.
   3. Restart your iPhone, iPad, or iPod touch and your computer.
   4. Reset your Trust settings.

If the above steps don't help, go to Settings > General > Reset and tap Reset Network Settings. This also resets Wi-Fi networks and passwords, cellular settings, and VPN and APN settings that you’ve used before.

If you downloaded iTunes for Windows from the Microsoft Store, make sure that iTunes Mobile Device Helper is enabled as a startup item.

If you still need help, contact Apple Support."

About the 'Trust This Computer' alert on your iPhone, iPad, or iPod touch

Have a great weekend!