You do NOT need an Xbox Live Gold (now Game Pass Core) subscription to earn some Avatar Awards. The requirement depends on the award source.
| Activity | Xbox Live Gold Required? |
|---|---|
| Xbox App Quests / Avatar Editor | No |
| F2P Game Achievements → Avatar Items | No (Gold not needed for F2P online) |
| Paid Game Achievements → Avatar Items | Yes (if achievement requires online) |
| Online Multiplayer Milestones | Yes |