Right above the oil filter there is what looks to be a vent but im not quite sure and im also kinda scared about dirt and water coming into the engine. So im wondering if anyone knows what it is any help is appreciated.

Welcome to the forum Peter, could you possibly get a photo of the hole/vent and post it please.
That would really help us to determine what it might be.

I also helps to know vehicle, engine size and year when you ask about your car.

All new members must now fill out a profile and Peters information is also available by clicking on the 06silverado link to "about me" in his profile field.
GM 2006 Chevrolet Model Silverado Engine Type V8 5.3
Peter you can add your vehicle information, which will always show up in your posts, by adding it to the *ignature line.
Just click on User CP (in the top left of your screen) and add the vehicle info if you like, (edit signature) it does make it easier.

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Peter those photos do not seem to be working.
For more information regarding including photos please see post # 3 in link below.
https://www.gmforum.com/introduction...-first-304379/
If you have any questions, just ask, we can help.

How about now?

Let me help you with those.

Looks like an accessory oil port. Obviously closed off.

No worries, sir, keep on truckin.

There is a gasket behind that plate that leaks sometimes. And yes that is where you would add a oil cooler if nesasary and when not using a cooler that plate just flows oil through. The source of that oil leak is most likely the oil pan gasket. The feed and return for the oil filter are right there and often leak with higher mileage LS engines at that spot.