What are top demanded career field in abroad countries for bsc, msc, paramedical having high salaries ?

I am science Bgroup student(PCB). i have decided that if iam doing BSC in any field than i will doit in india and than MSC & job in abroad countrie OR in any PARAMEDICAL than also i will do job in abroad countries thats why i want to know in abroad which jobs are more demand & of high salaries