You can't provide a direct link to a project in PS Touch per se; you can "share" the project to a social media network like Facebook or Twitter though, provided apps like those are installed.
Browse to the project you want to share > tap the export icon (5th icon from the upper right) > Share > select your desired app you want to export to.
Thanks for the replyni received but I am speaking about a hyperlink to a website Not to a photoshop project
Ahh, I see. That'll teach me to rush along. xD
You can't insert a hyperlink into a PS Touch project, sorry. If it makes you feel any better, you can't do this in Photoshop CC either (minus the image map feature of the Slice Tool).
You can, of course, export the project for use in other software like Dreamweaver for HTML coding purposes.