Are there any way to show an objects collider outline through scripting?

Here's what I used that worked for me:

  public class ShowCollider : MonoBehaviour {
  
      [SerializeField] bool showCollider;
 
      void OnDrawGizmos() {
         if (showCollider){    
             Gizmos.color = Color.green;
             Gizmos.matrix = this.transform.localToWorldMatrix;
             Gizmos.DrawWireCube(Vector3.zero, Vector3.one);
         }
     }

If you want this in gameplay

there is a solution if you're looking to visualize a collider in gameplay as I wanted to. I came across this thread, maybe someone else who is trying to do the same thing will too.

Working with 2D colliders, here is my code which uses a line renderer to draw the outline of any 2D collider.

Below "myCollider" is of type Collider2D, and "myLine" is of type LineRenderer with loop enabled.

 Mesh mesh = myCollider.CreateMesh(false, false);
 mesh.Optimize();
 
 Vector3[] positions = mesh.vertices;
 positions = positions.OrderBy(pos => Vector3.SignedAngle(pos.normalized, Vector3.up, Vector3.forward)).ToArray();
 
 myLine.positionCount = positions.Length;
 myLine.SetPositions(positions);

Note that you'll need to be using the namespace System.Linq for the OrderBy function. I've tested this successfully with the following 2D colliders: box, circle, capsule, and polygon. Hope it helps someone.