If you want to analyze (get metrics, raise issues on) your Helm Charts, then no. If you want to use a Helm Chart to run your SonarQube instance, then yes that’s supported.
I know you requested that 2 years ago so maybe you found another way to scan your Helm Chart but I wanted to let you know that it’s now possible withSonarCloud (see: SonarCloud now supports Helm Chart scanning!) and it will be possible with the upcoming SonarQube 10.4