I'm not able to provide the details of the project nor show you the facilities for it, because this has not been made public yet.
I'm able to show this only to the people who have been selected.
ご質問ありがとうございます。
"I'm not able to provide the details of the project nor show you the facilities for it,"=「このプロジェクトの詳細をお教えすることや設備をお見せすることは出来ません。」
"because this has not been made public yet."=「なぜかというと、これはまだ公けにされていないからです。」
"I'm able to show this only to the people who have been selected."=「選ばれた人にしかお見せできません。」
ご参考までに。