Be careful when you add lines below:
First we are requesting Construct 2 on Start of Layer check for LocalStorage check item "Level_select" Exists or not.
Two LocalStorage item "Level_select" Exists LocalStorage get item "Level_select"
Three LocalStorage on "Level_select" get system set Level to LocalStorage.itemValue
Now if you test run your project screen will look like below:
Only little bit left to add.
Open your Level_0 events and add these lines below:
Not much is it? Now test it it should work fine. Good luck.
Lord Shiva bless you all