How to access data from Rich Text Style Row Structure

Do a workaround by making your own struct

#pragma once

#include "CoreMinimal.h"
#include "UObject/NoExportTypes.h"
#include "Styling/SlateTypes.h"
#include "CustomStyle.generated.h"

/**
 * 
 */
USTRUCT(Blueprintable,BlueprintType)
struct YOUR_API FCustomStyle : public FTableRowBase
{

	GENERATED_USTRUCT_BODY()

	UPROPERTY(EditAnywhere, Category = Appearance, BlueprintReadWrite)
	FTextBlockStyle TextStyle;
};

Then you can make a custom datatable based on it and access all of the data

Or in BP

Then make your data table with it

As you can see you can basically copy the internals of the rich text style and use it as your own with access to all parts of the style.