I’m going to pass IElTS this year. Could you advise me exam center in Russia or abroad?
And is it worth passing exam in Russia? It might be better to pass the one in Europe or the UK, might not? What do you think about?
Here are two things which you might find helpful to know:
1. The phrase which you needed to use in your post is take an exam. For example, 'I'm going to take IELTS this year'.
['Pass an exam' is something different - this means to achieve an acceptably good grade in an exam: 'pass' is the opposite of 'fail'. You can know that you're going to take an exam, but you can't know if you're going to pass it!]
Another phrase you can use, more informally is 'do an exam'.
2. The exam is the same regardless of where you take it. It's the same exam, with the same questions and the same grading.
You could sign up for an IELTS course at a school the UK (or another English-speaking country) and then take the exam in that country. The course would help your English, as would the time spent practising your English in the English-speaking country, but the location where you actually sit down and take the exam is not important. You'd take the same exam under the same conditions whether you're in England or Russia.
I can't see any advantage for you of taking IELTS in a European country which isn't English-speaking. Dealing with two foreign languages at the same time would be confusing and would not improve your chances with IELTS.
If you can afford the time and the money to spend several months in an English-speaking country, all well and good. If you can't, you can study in Russia, preferably with a native-speaker teacher who specialises in IELTS, and take the exam at your nearest centre. The British Council in Moscow would be the obvious option for you.
Good luck with your exam!