Nothing. That was an emblem that was obtained from earning certain criteria from d1. If you don’t have it now, then you won’t be getting it as the time has long expired for you to earn it and/or Bungie to manually give out if it wasn’t automatically granted. Edit…you are also cross saved using your steam account. Steam accounts couldn’t earn these d1 retro emblems as d1 wasn’t on pc. Only xbox & ps accounts will have them.