Wait for seconds and then set a bool to true.

So I have ma de this script for my movement but i got the problem that IEnumerator time() won’t run. I have tried to write it as. IEnumerator bool time() but is doesn’t work either. Thanks for your help.

using UnityEngine;
using System.Collections;

public class movement : MonoBehaviour {
	
	//value for movement with keys
	public float movspd = 10.0f;
	public float trnspd = 100.0f;
	
	//value for push movements
	public float push = 10.0f;
	public bool quickpush = true;
	
	
	// Use this for initialization
	void Start () {
	
	}
	
	// Update is called once per frame
	void Update () {
		
		// This is the movement for the arrows 
		float move_Forward = movspd * Time.deltaTime * Input.GetAxis("Vertical");
		float rotate = trnspd * Time.deltaTime * Input.GetAxis("Horizontal");
		
		transform.Translate (Vector3.forward * move_Forward);
		transform.Rotate (Vector3.up * rotate);
		// Ends ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
		
		
		// This is the movement for the sida pushes
		float push_p = push * Time.deltaTime;
		float push_n = -push * Time.deltaTime;
		
		if(Input.GetKey("a") && quickpush){
			transform.Translate (Vector3.right * push_p);
			quickpush = false;
			time();
		}
		
		if(Input.GetKey("d") && quickpush){
			transform.Translate (Vector3.right * push_n);
			quickpush = false;
			time();
		}
		// Ends ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
		
		
		if( Input.GetButton("reset")){
			transform.position = new  Vector3(0,0,0);
			transform.eulerAngles = new Vector3(270,0,0);
		}
	}
	
	IEnumerator time(){
		
		yield return new WaitForSeconds(2);
		quickpush = true;
		return;
	}
}

Try with:

StartCoroutine(time());

I would deeply recommend as well to avoid using name of objects that already exist.
time is a variable from Time and could get you confused as which one you are using (despite the () for the function). Get used to using clear different names.

You should create a new Coroutine using function

StartCoroutine( time() )

ps: but think twice before creating a coroutine in update function. The code will create one coroutine per frame