Get the plugin from Roblox or from releases on github. Learn how to use it here, there's also a Youtube tutorial and a Discord for support. When the 'properties' tab is not enough, Link above also ...

and e.g. see which properties a certain instance has. Inxpect allows you to easily inspect what was otherwise hidden. Fast, easy, smart. It’s super efficient, easy-to-use, and has full plugin support.