Tilemaps and Game Scale

I am not sure I am understanding this correctly. If anyone could help that would be great.

I have a tilemap in tiled:

I understand that my tile size and number of tiles equate to 1280 x 768px.

But does that mean that my games scale must be at least 1280 x 768px?

Or can it be smaller and the main cam can just follow a player around?

Scale example I am referring to:

scale: {
    width: 800,
    height: 600

Also if it can be smaller, would anyone have a resource that shows how this is done?

You can use game dimensions smaller than the map, then either have the camera follow a sprite or move the camera with keyboard controls.

Thank you this is exactly what I was looking for.