Conclusion
The good news is that, while being bothersome, a blocked ear is typically simple to treat on your own. Some situations would require a small amount of medical assistance.
It makes sense that you would want a blocked ear to clear up as soon as possible because it can be irritating and annoying. Depending on the underlying cause and how soon it is treated, the length of time can vary.
It is possible to swiftly clear air pressure or water-induced ear obstruction. Infections and earwax buildup can take longer to go away depending on how bad they are.
References;
[1] https://www.webmd.com/allergies/sinusitis-and-sinus-infection
[2] https://my.clevelandclinic.org/health/treatments/24654-ear-drops
[3] https://my.clevelandclinic.org/health/treatments/23209-valsalva-maneuver
[4] https://www.plasticsurgery.org/cosmetic-procedures/ear-surgery/procedure
[5] https://www.healthline.com/health/how-to-make-a-warm-compress