Lingqs.apkg file

Hello, I exported my vocabulary and sent files to my email client. I received the file lingqs.apkg. How to use this file? Is this for andoride? I tried to export AnkiDroid application file, but no result.

You can open the .apkg file with the Anki software.
Take a look at this article for detailed explanation:
APKG File: How to open APKG file (and what it is)

I tried AnkiDroid, but no words appeared in the program …

Can you try any other program?