Hiya 
In this episode of What In Webflow 012, we walk-through how to integrate custom code to have a skew effect on scroll in Webflow:
This tutorial was created because of the awesome question provided:
To walk-through this tutorial with me, make sure you use the cloneable project at Skew JS Tutorial - Webflow
Also, you can find a more comprehensive tutorial at https://www.superhi.com/video/skew-on-scroll-effect
And an awesome implementation of this custom code can be found at https://durimel.io/nel
Hopefully, this was helpful. 