This (unsupported) version of the HELICS ns-3 module should work with HELICS v3.x, and ns-3.35 or earlier that used WAF as the build system. If a version of ns-3 prior to Dec 6, 2019 is needed, the patch here can be applied to fix finding Boost for contrib modules: https://www.nsnam.org/bugzilla/show_bug.cgi?id=3007. There are no guarantees that you won't run into other bugs in ns-3 or the WAF build system used.
If you run into issues, it is recommended that you upgrade/migrate to the latest version of the helics-ns3 module and ns-3 (ns-3.36 or later) which have switched away from WAF and now use the CMake build system.
To setup, extract the HELICS ns-3 module files into a folder named helics in the ns-3 contrib folder, and then follow the instructions in the README.