Need help with CPA landing page

I know it's gonna sound like I'm forcing an elephant in a cat crate here but just wondering if someone can help with this.
I'd like to use a Fortnite/CoD/whatever game landing page for a CPA content locker. I've downloaded landing pages and I was wondering if there is a way to use them on a Shopify Store, if yes, then how?
The reason is I have free stores available so may as well use them for something.

Cheers