Progress Bar
You can use progress bars as a health bar, mana bar, loading bar and so on. You can tweak the settings via inspector, but you can also change current percent or speed from your script.
API / Scripting
using Michsky.UI.ModernUIPack; // namespace
public ProgressBar myBar; // Your pb variable
void YourFunction()
{
myBar.currentPercent = 50f; // set current percent
myBar.speed = 2; // set speed
myBar.invert = true; // 100 to 0
myBar.restart = true; // restart when it's 100
myBar.isOn = false; // enable or disable counting
}