I want to know how to put a draft on an access denied page from the sandbox
Can I save a draft from the sandbox and then make an SCP with it?
If you want to take work from an existing sandbox draft page and make an SCP with it, that's not allowed. It'd be considered theft and/or plagiarism.
If you want a place to work on drafts, you're perfectly welcome to create a new sandbox page for yourself, provided that it's your own content, and yours alone, that you keep there. If you'd like assistance with that, feel free to PM a staff member, and we'll help you set one up.
The sandbox wiki is another site entirely; you shouldn't need to worry about "access denied" because the only place you'd encounter that is the mainsite.
I think he's asking how to put his sandbox draft onto the wiki site, creating his own article.
Last tab. You should have read this anyway, however, so this question worries me a little bit.