Hi Angelami7,
We appreciate you reaching out to us. We understand that you are experiencing issues reading the clock and date on your Lock Screen because it is very dull.
We’d like to gather additional details that may help us be in a better position to assist you.
Have you had the chance to restart your device?
Are you experiencing the same issue if you create a new Lock Screen?
In the meantime, we recommend that you check for a software update.
While it isn't inherently assured that an update will resolve the issue, updating to the latest software version for your device can help isolate potential software issues.
Kindly secure a backup and update.
How to back up your iPhone, iPad, and iPod touch
Update your iPhone, iPad, or iPod touch
Take care!