ArcGIS Pro 2.6 API Reference Guide
MinScale Property (Layer)

ArcGIS.Desktop.Mapping Namespace > Layer Class : MinScale Property
Gets the layer's minimum scale (representative fraction) at which the layer is visible in a 2D map view.
Syntax
public double MinScale {get;}
Public ReadOnly Property MinScale As Double
Remarks
You need to use GetEffectiveMinScale method, if you want to find out the effective minimum scale considering visibility scale ranges of all its parent group layers up in the hierarchy.
Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 7

See Also

Reference

Layer Class
Layer Members