Hi,
If you need to customize a view of HikaShop in order to add some text, I would recommend you first read this documentation page:
www.hikashop.com/support/documentation/1...-display.html#layout
As explained there:
you can override the view files of HikaShop via the menu Display>Views.
To know which view you have to edit, just set the "Display view files" setting to "all" under the "Advanced" tab of the HikaShop configuration.
This will add dashed borders around eah view file used with the name of the view file used on the top left corner of the view file. It will have 2 parts separated by a /. The left part will be the view name and the right part will be the file name so you'll be able to easily find what you need to edit.
So check your registration form after activating that setting and you'll know which view file you need to edit via the menu Display>Views. Then, just add your text in the corresponding view file where you need it and save and you'll be done.