How to modify Enum names at runtime in Unreal Engine 5 and Unreal Engine 4

ModifyEnumNamesAtRuntimeInUE5.cpp

// Define your enum as usual inside an Header file.
UENUM()
enum class EMyEnums : uint8
{
	MyEnum1,
	MyEnum2,
	MyEnum3,
	MyEnum4,
	MyEnum5,
};


// NOTICE: You can use the following code inside any function.
// Fetch the Enum class object that contains the metadata associated to each enum
UEnum* Enum = StaticEnum<EMyEnums>();

// Hide all enum properties
for (int EnumIndex = 0; EnumIndex < Enum->NumEnums(); EnumIndex++)
{
	Enum->SetMetaData(TEXT("Hidden"), TEXT("true"), EnumIndex);
}

// Change the enum display name and make it visible
Enum->RemoveMetaData(TEXT("Hidden"), 0);
Enum->SetMetaData(TEXT("DisplayName"), TEXT("ThisIsAnEnumUnrealName"), 0);

Enum->RemoveMetaData(TEXT("Hidden"), 1);
Enum->SetMetaData(TEXT("DisplayName"), TEXT("ThisIsAnEnumRealName"), 1);

Enum->RemoveMetaData(TEXT("Hidden"), 2);
Enum->SetMetaData(TEXT("DisplayName"), TEXT("ThisIsAnEnumFloatName"), 2);