Hello Vee_Jai,
You came from this resource: If an alert says Face ID has been disabled on your iPhone or iPad Pro - Apple Support Which provides the steps you'd need to take to resolve this error, "A problem was detected with the TrueDepth Camera. Face ID has been disabled." This states there is an issue with the camera, even if it otherwise, does not reflect an issue.
If those steps weren't helpful, then you'd need to seek service to resolve it: iPhone Repair and Service
To check your coverage, go to: Check Your Service and Support Coverage - Apple Support: Check Your Service and Support Coverage - Apple Support
Get prepared for your visit: Get your iPhone, iPad, or iPod touch ready for service
Select your region and search nearby for locations: Find Locations
Wishing you well, take care.