Just a friendly tip, every quest that has 4 quest to complete, it always has a pay method as the last one. The first 3 quest are free and the 4th quest has to be including money.
You dont get 10 days to complete all the task. You get about a month for each task. The time resets after you complete one.
Nevermind, I found it. You need to open your city tab from the World Map, then tap on the “i” icon in the right bottom corner of your avatar and there will open statistic tab where you will find battl...
Play at least 7 battles! I dont know how to check how much battles I did. If you have a real answer, please comment. If you are just trying to help but never played this game, dont comment.