How can I pass a same tracking url across all pages?

Question

First of all, I'm new to development.

Here's the tracking link - https://www.example.com?soldPrice=[price]&someVariable=[subId]&TrasactionId=[subId2]

It works on first pages. But as soon as the user click some other page or button the tracking URL drops - https://www.example.com/about

How can I pass the tracking id to all other pages like https://www.example.com/about?soldPrice=[price]&someVariable=[subId]&TrasactionId=[subId2]

I'm new to development.