Is the PDF protected or is it restricted to any type of editing?
If it is protected ,then you would need to type in the password to unlock the file and then perform further function.
No there's no password and I can edit the text. I want to now copy it and paste in an email and not just the link.
Is this an interactive form?
If Extended Reader Form Rights have been applied, there are additional restrictions applied to the PDF which may be preventing copying content.
It's probably not protected. But Acrobat isn't like Word - you can't just copy and paste bits into another app. You can copy text, however.