I Have Pro Account, But While Create App, App Show Me 2GB Space, Can I Use 1TB Space In App ?
Are you referring to the quota information being returned in the account information API call? This should reflect the quota of the account linked to the app, which isn't necessarily the same as the account that created the app itself.
If you're seeing incorrect information, can you post a sample request/response? (Just be sure to redact the access token.) Feel free to open an API ticket if you'd prefer to share it privately: https://www.dropbox.com/developers/contact