how to get over level 12 of italian?
i want to reach until level 25 and i finished till level 12 and how do i get level 13 and onwards
Well, I'm still not sure what you mean. But if you keep doing exercises you will continue going up in level. Doing "Strengthen Skills" and keeping your tree golden are ways to do this.
Your level and finishing a language tree are not tied to each other. Level just indicates how many XPs you have earned while working at the language you are studying. You can continue to increase in level after working all the way through a tree.
You're welcome, AsadowAli. As far as financial gain goes, I don't know which would be better for you. Each can have its advantages, depending on where you are or where you wish to live. Maybe others will speak up with advice. Everything else being equal, I would guess that German would be more useful in that regard, as Germany has the stronger economy.
If you are not translating with Immersion, the fasted way to earn points is to do "Strengthen Skills" or "Strengthen Individual Skill" timed exercises,. With those you can earn up to 20 points per attempt, providing Duo has not got you in some sort of A/B test.
[added] Another way to strengthen your Italian skills would be to work on the English for Italian speakers course here at Duo. But I do not think this would add to your Italian for English speakers level (but I do not know for sure).