I heard a strange noise while driving my car two weeks ago, can you diagnose it over the phone?

No.

If my check engine light comes on, does that mean the car is going to burn to the ground?

No.

If my car is making a weird noise, should I just turn the music up?

No.

Is it bad if I’ve never changed my oil in 100k miles?

Yes.

Can you pull the codes and tell me what to replace?

No
Codes are clues, not conclusions.