Help save my stars from my project

You need to use an array or a dictionary to store high scores. AND you will need to save this array/dictionary in Local Storage. It's not difficult. To save the entire array you use:

Local Storage set item "scores" to MyArray.AsJSON

To load it back:

MyArray load from LocalStorage.ItemValue

There are plenty of examples and tutorials explaining how to use Local Storage. Here's one that uses an array.

I gave you the wrong link, sorry. Here is the correct one:

https://editor.construct.net/#open=level-selection

That example is not valid for me, I want all the starting levels in my game to be unlocked and there are no star levels to save in the array.

This is like saying that I can't use the example because it's saving apples and I need carrots.

Just modify the example to save the stars or scores instead of the locked/unlocked state!