This is a paid asset, but now you can download Power Progress Bars Free.
Detail this asset from Unity Store: Original Link
Power Progress Bars v1.2
“If possible, please buy the package to support the developer”
Power progress bars it’s a package with easy to use but powerfull progress bars for any purposes. Package contains 17 beautiful predefined progress bars.
See the demo.
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The product features:
-17 ready to use progress bars made in the different styles.
-5 types of materials and shaders to create any type of progress bars you want.
-Easy to customize and create your own progress bars.
-No need to hit play button to see result.
-Full inspector integration.