Hello @Nkekere_Tommy_Minimann
In your WordPress site, you can use REST or our JS-SDK I assume.
But you can’t upload the site to the Backendless Files since as far as I know WordPress is running on PHP which is not supported in our FileService
I can propose you try to build your site using our UI-Builder, you can easily start by create a new app based on a blueprint where everything (DB/Files/UI/etc) is already configured and you need just to modify it according to your needs. We frequently extend a list of our blueprints, so if you do not see any suitable for you just let us know, and who knows, maybe this one is already in progress and it will be available soon. So follow up by our blog where we add posts about new blueprints.
Regards, Vlad