How much minimum experience do we need to enter into any of the companies in Arab countries?

Assalam-o-Alaikum Brother you have asked some very inappropriate question.
This does not belongs to my specialties in PLC, this question falls in the category of HRM in Middle East.
But since you have asked, so here it is this comes with job requirement of your employer.
Dubai is not a city to reside for common person, You have mind-set about about a commercial city, where everything you see is costly and does not come cheap, even if it is free.
You must have enough professional experience, support and money in pocket to survive in Middle East.
You must understand the risk of changing Immigration and Employment Rules.
It is further advised that please consider your income in your own country, and your income in Middle East job (must be about400% greater than your native country) You can ask any other person, who is working in Middle East in your hometown or any connection, how much is cost of living in other country than yours.
Good Luck for your future, be careful and take every step after deep thinking.

it is different from company and factory to other but the main important section to to understand how to control in machine by using PLC and SCADA system and have the ability of making change in the program to capability of condition also you should to know some information about inverter and machine

Thank you

about two to three years