Hi sir. May I ask how will i carry out legal...

If your inquiry relates to the employer's refusal to pay the worker's rights, here is the following information:
Article 67 of the Qatari Labor Law states:
Article 67
If the work contract is terminated for any reason, the employer shall pay the worker’s wages and all amounts due to him before the end of the working day following the day on which the contract ends, unless the worker has left work without giving the notice stipulated in Article (49) of this According to the law, the employer must, in this case, pay the worker’s wages and all other entitlements within a period not exceeding seven days from the date of leaving work.
That is, if the employer violates this, the worker can file a complaint with the Ministry of Labor in order to obtain all his financial rights.