Hi, my name is Saifullah Usmani. I am a Full Stack Python Web Developer. I have been programming for almost 5 years now.
Well I don't want to waste your time.
You can get free sandbox account with API key of PayPal or Stripe in Pakistan by setting the location to supported country such as UK.
Done you got the account to mess around with the payment gateway and do the work for your clients.
After work done ask client for their real API key and put then instead of sandbox API key.
If it added value or you learned something new. Make sure to follow my blog and YouTube channel. Links are at the bottom.
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Hire me: https://www.fiverr.com/saifullah02 (For web development Purposes)
My New Blog: saifullahusmani.com
Follow me here: https://dev.to/saifullahusmani
YouTube: http://bit.ly/saifullahusmani (Programming Tutorials Coming Soon).