It depends on what you mean by "worthing" it. To become a better programmer? Definitely worth it to know Clojure, as it does provide a new programming style that has inspired some other ecosystems. To find a job? Probably not. Clojure is not a popular language.

On the other hand, nowadays you probably can get away with not knowing Java when doing Clojure. There are also Clojures that are not on the JVM. For example, if you do Clojurescript, then you probably need to know some Javascript. There are also natively compiled Clojures for shell scripting, e.g. babashka, etc.