How to make list of methods (example Sims)

How can i list methods?

public List<???> Actions = new List<???>();

and then i would call the top one in the list every time previous method is completed or something like that.

Or is there a better way to do this?

It depends how complex and OOP you want to go with this. In the simplest case:

using System;
using System.Collections.Generic;
using UnityEngine;

public class ActionClass : MonoBehaviour
{
    private List<Action> actions;

    private void Start()
    {
        actions = new List<Action>();

        actions.Add(Action1);
        actions.Add(Action2);
        actions.Add(Action3);
    }

    private void Action1() { }
    private void Action2() { }
    private void Action3() { }
}

Something like Sims is sure to do it much more involved. An OOP base would look something in the lines of:

using System.Collections.Generic;
using UnityEngine;

public class AbilityClass : MonoBehaviour
{
    private List<Ability> actions;

    private void Start()
    {
        actions = new List<Ability>();

        actions.Add(new WatchTV());
        actions.Add(new TakeBath());
        actions.Add(new MakeFood(3));
    }
}

public abstract class Ability
{
    public abstract void Do();
}

public class WatchTV : Ability
{
    public override void Do()
    {
        Debug.Log("Watching TV");
    }
}

public class TakeBath : Ability
{
    public override void Do()
    {
        Debug.Log("Taking a bath");
    }
}

public class MakeFood : Ability
{
    public int servings;

    public MakeFood(int servings)
    {
        this.servings = servings;
    }

    public override void Do()
    {
        Debug.Log("Making food");
    }
}