I have passed my PL 300 yesterday and still waiting for my certificate. Will it be a long wait? it wasnt that long last time when I did it.

Typically, for most exams, you will receive your results within minutes of finishing the exam. However, it can take up to 24 hours for your results to appear in your Learn profile's Certifications tab. Since you passed your PL-300 exam yesterday, it is possible that your certificate will be available soon, but you may need to wait a bit longer than you did previously. If it does not appear within 24 hours, you may want to contact support for assistance.

References:

• Certification process overview
• When to expect your score