The latest version of Geneious Prime is fully supported on Apple M1 macs. However, Geneious Prime is not optimized for the M1 architecture so performance gains from the new chips may be limited. Geneious Prime requires x86 Java (which it is bundled with) and cannot run with the native ARM64 Java.
Further information on running Geneious Prime on the MacOS Big Sur operating system is available at this link.