Hey ,
If you go to Window, you can get back your ‘components’, ‘my blueprint’, ‘viewport’ and your ‘details’ tabs. If you want to get the Event Graph back, please just double click on ‘Event Graph’ from within the ‘My Blueprint’ tab. The same rules apply for any construction scripts. Simply double click on the Construction Script within the ‘My Blueprint’ tab.
Let us know if we can be of any additional assistance, have a wonderful day! 