Is it a good degreeWatch
Having said that, I probably wish I'd chosen Business Mgmt, because Economics degrees have a lot more maths than I anticipated. Especially coming from someone who changed out of A Level maths a few weeks in because I hated it lol.
If you're taking a BSc course, be aware that as discussed above, there is quite a heavy amount of mathematical content in an Economics course which will be far different in nature to one of Business Management. I'd go over the courses you actually want to do (not just the subject but what the universities you are thinking of going to have structured their courses as) and make sure it sounds interesting and matches your strengths.
2. It depends on the job you want
3. Depends on if you get a 1st or 2.1