Overloaded Armor Bar Mod 1.16.5/1.15.2/1.12.2 will allow the armor values over 20 to pop up in-game as various configurable colored icons. It lets them display accurately.

Overloaded Armor Bar Functions
It has solved an issue where the vanilla armor bar did not correctly show “better than diamond” level armor. That happened because it simply maxed out when it was full.
In other words, the present download can let the armor values more than 20 perform as different icons. Their colors will depend on how many times you fill the bar.
Meanwhile, without AttributeFix, the armor display will cap out at 30 Armor or 1.5x diamond armor. That occurs due to the vanilla armor cap.
Some optional features
Point out the armor bar once somebody isn’t wearing any armor
Hide empty armor icons
Notes!
Should adjust the bar
The mod can exist with mods that supplement the additional health bars or recolor them. You ought to utilize it with Colorful Health Bar. That is a light mod that colors again the health bars instead of stacking them.
Unnecessary to set it on servers
A fork of Overpowered Armor Bar
Overloaded Armor Bar is a cosmetic mod that requires Minecraft Forge!
Screenshots