Gidday mate,

Everyone has a different spine, and Wikipedia reference-linkscoliosis and reduced curvatures are common enough. The point is are you symptomatic? Do you get pain with running and working out? Scoliosis most commonly comes on in your teenage years - it's quite possible that this is just your normal spine and it isn't going to cause you any issues. Don't refrain from doing your normal activity unless it is causing you problems. If you get a problem go see a physio with a bit of experience and they'll be able to tell you if the scoliosis is contributing to it. The leg length discrepancy is also normal - however it depends on how big the difference is - it's considered a possible cause of scoliosis if it is significant enough.
Scoliosis can also be because of different reasons - if it's muscular then it will dissapear when you lay down... if it's structural then it won't - and there isn't heaps you can do about it.
If your really worried then go see a senior physio somewhere (maybe even one who knows something about schroth therapy though they are hard to find outside of europe) and they will assess and give you appropriate exercises.

Have a good one