The Render Scale profile property does not scale the camera render target which would allow the game resolution to be rendered differently than the native resolution.
Instead, it scales the render target itself. Refer attached video.

Steps to Reproduce:
1. Create a new Project with URP Template.
2. Project Window > Assets > Settings > URP-HighQuality.
3. Inspector > Quality > Render Scale.
4. Move the slider or change the values manually while observing the game view.

Actual Result:
The scale of the render target itself changes.

Expected Result:
The resolution of the render target should scale.

Reproducible with: 2019.3.0a10, 2019.3.0b9 , 2020.1.0a11
Not reproducible with: 2018.4.12f1, 2019.2.11f1, 2019.3.0a9
Could not test with: 2017.4.34f1 (no Package Manager)

Reproducible with package versions: 7.0.0, 7.0.1
Not reproducible with package versions: 4.1.0-preview, 6.9.2

Environment:
Both Windows and Mac.