ArcGIS Pro 2.7 API Reference Guide
MaxScale Property (Layer)

ArcGIS.Desktop.Mapping Namespace > Layer Class : MaxScale Property
Gets the layer's maximum scale (representative fraction) at which the layer is visible in a 2D map view.
Syntax
public double MaxScale {get;}
Public ReadOnly Property MaxScale As Double
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 10, Windows 8.1

See Also

Reference

Layer Class
Layer Members