New here how to get level 2
I need participate in discussion how can upgrade
By doing more lessons. If you are talking about the XP levels (=the numbers next to the flags on the forum), you need 60 for level 2. You can check the numbers you need here: https://duolingo.fandom.com/wiki/XP#Level
If you mean the level of each skill (=circle), the answer is also by doing more lessons. The yellow line around the skill shows you how far you already are.