PMP you need to take a training course from registered education provider; they will give you a participation certificate,
trainig hours aroudn 35 requried
second, experience of working in project, that you certainly will have.
third your education, you have a university degree, i saw your profile, so you are covered there as well.
after getting training and prepairing for exam, before takig exam, you fill application online by providing all details, they reivew and reply back in 5 working days if they need more proof or they accept your application directly. then
you are able to pay for your exam fee, around 600$ in total.
training fee is around 30k PKR
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summing it up, first step is to get training, and prepare well, then give mock exams, applying for exam is the last step.
for training there is PMI Lahore Chapter, second is Asad Ullah Chaudhry third i have heard about IT Heights.
but i recommend an online training course, as they cover everything in detail, and its self pace course, it requires bit more self motivation as you study on your own timing, in above mentioned you study in group, but the trainer's knowledge and content is way more in online self pace course than in person training