I uploaded a run of Super Mario Land 4 days ago and nobody did answer me about if it's valid or not. 

Does anyone know what should I do in this situation? 

Thanks!

Patience! 4 days isn't even a problem. Wait until 2 weeks. Some runs get verified in no time, while other require youto wait since the mods have lives aswell.

While you're waiting, you can reach out to the moderator(s) on their social media links or make a post in the forums just to give them a little extra notification if you haven't been verified after a week or so.

If it reaches 2-3 weeks with no response from the mods, you can request to become moderator here https://www.speedrun.com/The_Site/thread/63nr7

Thanks! Finally the run is verified. Hoping to improve :)