This vulnerability impacts Log4J version 2.x, version 1.2 is not affected (source). Norconex HTTP Collector version 2.x use Log4J v1.2.17 and thus are not affected. Version 3 of the Collector uses Log4J v2.17.1, which Apache has patched.
Note: Unless you made it so on purpose, the HTTP Collector does not run as a service accessible from the internet.