Once those boxes are checked, drop the JAR into your mods folder, launch the game, and enjoy a cleaner, more informative Minecraft experience. Your eyes (and your inventory) will thank you.
Whenever downloading a JAR file from the internet, exercise caution. The filename UI-Utils-Mod-Fabric-1.20.1.jar follows proper naming conventions, but malicious actors can mimic names. File name- UI-Utils-Mod-Fabric-1.20.1.jar