How to predict a profession from a chart specially when lot of vocations are available today in comparison to the earlier times?
Is there any ready recknor available?

Well, I wouldn?t accept any open question in this matter "what profission would be good to me" is too open for an horary

If client has two or three options, you probably will have to use general indications (mercury for accounting, venus for music, etc). If client is asking about only one option, I would look for indications in the general significator and in the 10th house.