How to Rotate/Translate a GameObject via C# Script

So, I'm writing a script to move my gameObject (basically a submarine). I'm collecting the x/z coordinates as well as my rotation from a text file. In my code, I convert the lat, long and heading coordinates to meter distances and change in rotations.

  using UnityEngine;
  using UnityEngine.UI;
  using System.Text;
  using System.IO;
  using System.Collections;
  using System;

  public class PlayerController: MonoBehaviour {

   public GameObject remus;
   private Vector3 position;
  
   public static void Main (string[] args)
   {

     float speed = 1.0f;

     //Import text file and read all.
     string text = System.IO.File.ReadAllText("/Applications/Unity/Projects/Underwater/SampleFile.txt");
     if (text != null) {


         //Split the string of text into an array containing each number in the file.
         string[] strings = text.Split (new[] { " ", "\r\n" }, StringSplitOptions.RemoveEmptyEntries);


         //Convert each string number to a double.
         double[] nums = new double[strings.Length];
         for (int i = 0; i < strings.Length; i++) 
         {
             nums [i] = Convert.ToDouble (strings [i]);
         }

         //Common variables
         double R = 6371000;
         int Entries = 86;


         //Determine the Z distance travelled using the latitudes
         double zDistances;
         float zMeters;

         for (int i = 0; i < Entries; i += 3) 
         {
             zDistances = nums [i + 3] - nums [i];
             zMeters = Convert.ToSingle(zDistances * R * Mathf.PI / 180);
             transform.Translate (0, 0, zMeters);
         }


         //Determine the X distances using the longitudes
         double xDistances;
         double lat;
         float xMeters;

         for (int i = 1; i < Entries; i += 3) 
         {
             xDistances = nums [i + 3] - nums [i];
             lat = nums[i-1];
             xMeters = Convert.ToSingle(R * (xDistances) * (Mathf.PI / 180) * Math.Cos(lat));
             transform.Translate (xMeters, 0, 0);
         }
             
         //Determine change in heading
         float rotation;

         for (int i = 2; i < Entries; i += 3) 
         {
             rotation = Convert.ToSingle(nums [i + 3] - nums [i]);
             transform.Rotate(0, rotation, 0);
         }
     }
 }

My issue occurs with the 3 "transform. " in each if statement. I am getting this error message:

/Applications/Unity/Projects/Underwater/Assets/Scripts/PlayerController.cs(5,5): Error CS0120: An object reference is required to access non-static member `UnityEngine.Component.transform' (CS0120) (Assembly-CSharp)

and I've checked out so many other questions that ask about this error and none of them seem to help my issue. I have tried using capital and lowercase letters, .rotation and .translation, and I still get them same error. I'm wondering what I'm doing wrong or if there is a better way to go about it.

Thanks in advance!