Are you seeing an error on your profile or when using a gamercard saying that your privacy settings need to be changed?
This could be because your privacy settings don't allow the public to see your Xbox LIVE profile, or there simply could be issues with Xbox LIVE.
- See an article here for information on how to change your privacy settings: https://privacy.microsoft.com/en-gb/xbox-one-privacy-and-online-safety
- Check the status of Xbox LIVE: https://support.xbox.com/en-gb/xbox-live-status