Linguix allows you to test your English level by taking a vocabulary test. You will be prompted to choose words from the list that you know and provide some context about your mother tongue, age, etc.
As a result you will be given a score that will denote your English language vocabulary. This score will be then displayed on your Linguix dashboard, that you see when logged in at Linguix.com:
If you want to re-take the test and see how your vocabulary grows, visit this page https://linguix.com/vocabtest.