I've just finished the Ukrainian tree :)
Привiт всім ! я тільки но закінчив український курсе. це було цікаво і дуже весело. Дякую всім за цю роботу на Duolingo :)
Привiт Giannag55 !
I can't really answer because I spent almost two years in Ukraine, so my answer won't be objective.
Before, starting to learn Ukrainian here, on Duolingo I taught Ukrainian to myself using Assimil "L'ukrainien sans peine" ( a textbook for french speakers). After finishing this, my level was around A2-B1.
Then, I didn't practice for a while, so I forgot a lot of words. I used Duolingo to reactivate my vocabulary and improve my comprehension skill.
It's too hard to say HOW I'm fluent now because it depends on your definition of fluency. For Ukrainian, I focused on the comprehension skill not really the speaking skill. Duolingo Helped me to reach this goal. Now I understand a lot of what people say on the street. Often, I go the cinema (dubbed in Ukrainian) and I understand around 75% of the movie. I have a good passive knowledge of Ukrainian but I need to practice more in order to get a better speaking skill. I'm also fluent in Russian and unfortunately, I use it too much instead of Ukrainian....
If think if you use Duolingo + lot of immersion (movies, podcasts, and PRACTICE) you can reach a B1 level.
Hope my answer Helps you!