First, congrats on making your first scenario, igor br. However, there were some major bugs in the scenario making it not playable. If there is a flaw in one of your triggers, none of your triggers will work and that is the case for your map. I did go into the editor to investigate this problem though. Look at your message trigger effects that display the message ' \|/ New Objective \|/'. Symbols like \|/ are not allowed in the message and result in a trigger crash. Delete these symbols so it just says 'New Objective' and it will work fine. Also, on your starting cinematic trigger, take the loop off. You won't get anywhere with cinematic mode looped.
Now I tried to play it in-game. Everything looked ok but when I got to the wonder and the chat came up saying enemies were coming, no enemies came. And, I didn't want to wait the whole 20 minutes for the timer to expire, so I just resigned. If you want the army to attack, you have to change the cinematic blocks into units. You already had the basic Change unit triggers down, all you have to do is fill in what unit you want the cinematic blocks to change into.
Make those changes and update the file. Also, a little more terrain mixing and elevations wouldn't hurt. You did a nice job on the city design and it was nice to see that you used overlapping in some areas of the map and the waterfalls were nice.
I would suggest taking some time to playtest but other than that, good job for your first map. Keep practicing and I'm sure you'll improve!