Hi @Kot299929, welcome to the Forum!
Please note that the official language of the Forum is English. You’re welcome to post in Russian in the #foreign-languages section, otherwise please translate your posts to English before posting.
As for your question…
I think you’re probably asking about the Valor Challenge that requires completing 1 Challenge Event.
That refers to the monthly events like Knights of Avalon and Pirates of Corellia.
The next one of those will start on Wednesday, 12 February, with Knights of Avalon. Completing a Tier of Knights of Avalon will credit your for that Valor Challenge.
You can read more about the Challenge Events here: 🌟 Memento Challenge Events