MacbookPro 2018 model, one of the USB C port is dead. Can it repaired?

Hi,

Try to check USB-C ports of your MacBook Pro with Apple Diagnostics if it really reports USB-C ports error.

Use Apple Diagnostics to test your Mac - Apple Support

Apple Diagnostics reference codes - Apple Support

If it reports error, contact Apple Support or make Genius Bar reservation if your local retail AppleStore is open or find opened local Apple Authorized Service Provider to be examined your MacBook Pro there.

Official Apple Support

Genius Bar Reservation and Apple Support Options - Apple

Apple - Find Locations - Location Selector

How dead are we talking? Does it give you an error? Or just plain doesn’t work?

have you tried shining a light on the port and see if it needs cleaning? (Compressed air and a flat Q-tip)

Depending on the model, some can be easily replaced , others the whole logic board needs replacement…

in that case your best bet is to take it to the Apple Store or to a certified service provider :

https://getsupport.apple.com/