score:5
As I read this, the administrative review found that the original decision was in error because you did, in fact, demonstrate that you have a bachelors degree. They have overturned that incorrect decision, and your application will go back to be evaluated now that you've been given 30 more points.
Someone from the "decision making centre in Sheffield" will contact you "shortly" to tell you what to do next. If you don't receive any kind of communication from them, you'd need to contact UKVI and request assistance.
However, the letter notes that you did not demonstrate English language proficiency and the ECO has not yet determined whether you are a genuine student. Now that they have awarded you the points for your degree, they will check those things, along with all the other requirements, to decide whether to approve your application.