Looking for logging into the App Id Sign Up site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the App Id Sign Up site. After that you can login as usual with your login credentials.
https://support.apple.com/en-us/HT204316
https://secure.store.apple.com/shop/account/setup/start
https://developers.facebook.com/docs/apps/
https://support.google.com/admob/answer/6232340?hl=en
https://accounts.google.com/ServiceLogin
https://www.imore.com/how-create-new-apple-id-your-iphone-or-ipad
https://www.ibm.com/blogs/bluemix/2017/11/new-app-id-let-users-sign-sign-apps-email-password/
https://developers.google.com/identity/sign-in/web/sign-in
https://app.magicapp.org/signup
https://console.bluemix.net/catalog/services/app-id
https://appyourself.net/en/blog/in-app-registration-email-facebook/
https://openexchangerates.org/signup
https://support.magplus.com/hc/en-us/articles/203808708-iOS-Creating-App-IDs