ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Desktop.Mapping Namespace / Layer Class / MaxScale Property
Version

MaxScale Property (Layer)
Gets the layer's maximum scale (representative fraction) at which the layer is visible in a 2D map view.
Syntax
public double MaxScale {get;}
Remarks
You need to use GetEffectiveMaxScale method, if you want to find out the effective maximum scale considering visibility scale ranges of all its parent group layers up in the hierarchy.
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also