Remote Settings

Using ScriptableObjects directly with the component isn't currently supported. You could create a MonoBehaviour with properties that set your ScriptableObject fields (as described here: https://docs.unity3d.com/Manual/UnityAnalyticsRemoteSettingsComponent.html).

Or, it might be easier to add a function to handle the RemoteSettings. Updated event to your scriptable objects:

Code (CSharp):

1.     using UnityEngine;
2.  
3.     public class ScriptableThing : ScriptableObject {
4.  
5.         public float DefaultSpawnRateFactor = 1.0f;
6.         public float DefaultEnemySpeedFactor = 1.0f;
7.         public float DefaultEnemyStrengthFactor = 1.0f;
8.  
9.         public static float SpawnRateFactor{ get; private set; }
10.         public static float EnemySpeedFactor{ get; private set; }
11.         public static float EnemyStrengthFactor{ get; private set; }
12.  
13.         void Awake () {
14.             SpawnRateFactor = DefaultSpawnRateFactor;
15.             EnemySpeedFactor = DefaultEnemySpeedFactor;
16.             EnemyStrengthFactor = DefaultEnemyStrengthFactor;
17.  
18.             RemoteSettings.Updated +=
19.                 new RemoteSettings.UpdatedEventHandler(HandleRemoteUpdate);
20.         }
21.  
22.         private void HandleRemoteUpdate(){
23.             SpawnRateFactor
24.             = RemoteSettings.GetFloat ("SpawnRateFactor", DefaultSpawnRateFactor);
25.             EnemySpeedFactor
26.             = RemoteSettings.GetFloat ("EnemySpeedFactor", DefaultEnemySpeedFactor);
27.             EnemyStrengthFactor
28.             = RemoteSettings.GetFloat ("EnemyStrengthFactor", DefaultEnemyStrengthFactor);
29.  
30.             Debug.Log("Update settings");
31.         }
32.     }

This is essentially the same technique described here, but for ScriptableObjects: https://docs.unity3d.com/Manual/UnityAnalyticsRemoteSettingsScripting.html