I purchased the flights through United and it includes the BNE-SYD as VA908 on the ticket itinerary.
This is what I thought and kinda the reason I posted to see if someone more experienced knew. The flight isn’t United operated so the page for earning rates on United flights doesn’t seem to cover it. Therefore, it defaults to: Virgin operated flight, with a VA flight number, earns Velocity points at 5 per $. And therefore USD$1 arbitrary dollar value, gets converted to AUD$2 and turns into 10 points was my best guess, haha…