How do I find my Kotlin plugin version?

Here are few checks you can perform to see if everything works:

Kotlin 1.6. 0 is now officially released with Stable exhaustive whens, Kover, and new memory manager for Kotlin/Native!

Select Tools | Kotlin | Configure Kotlin Plugin Updates. In the Update channel list, select the Early Access Preview X channel, where X is the latest version of Kotlin. Click Check again. The latest EAP build version appears.