Hi Masha, you would actually need to ask (politely). For privacy reasons, italki won't display a member's Skype ID. I see a couple of members have written their ID in their introduction text, which is unwise to do, but the best option is to find people you can trust and then write to those people directly.

The icon just identifies that they use skype - I think you will have to ask for their id

If they don't let that you see, you can not see,for exampale you can manage in setting yours