hi,

see you have to work really hard right now to join in IT industry. however you have done bachelors in engineering and then masters course, but right now you want to join in IT industry, which is fine but the course structure is really different then mechanical engineering.

now coming to sap, or data science both are different, for data science you need to learn about python, ruby, ms excel, probability and statistics. there is various online lectures available on it follows by courses. some of the popular courses providers are  udemy, coursera, edx, upgrade.

same thing is for SAP also, sap technical module are sap basis and sap abap. however you must have Knowledge of C and SQL before starting of sap course.

now first decide whether you want to join data science or SAP, its along duration of course and would take time.

hope you understand.