The SKYDB community area has been launched in February 2023. Once public registrations are available, anyone will be able to join the community. Users of Phorio, SkyscraperPage, and other partnering websites do not need to re-apply. Their previous user data is on file.
If you did not yet have an account with the mentioned websites, you can apply as a member. If you are a member of Phorio, you can try to activate your account now.