EMPOWERgmatRichC thank you for your help.
well.. I took the mock exam without any preparation, just to have an idea of my starting point, and I scored 420( q26 V22)
Yesterday I bought the GMAT
OG, and I plan to study an average of 20-25 hours per week.
The application deadline for the master I want to apply for is June 1, however I booked the test for the end of march because I still have to graduate from my bachelor degree and I have to take 3 exams in June+ my bachelor thesis, so the only moment that I could study for the test is this month.
If I don't get the minimum required score, I still plan to apply for the master in April, as it is not mandatory to have the GMAT score at the moment of the application.
So now, to be more specific, I have around 3 weeks more or less to prepare for the GMAT in order to get a minimum of 550( 600+ would be better), starting from the initial score of 420 without any preparation.
Thank you again for your help!
Enrik