I am a 30 yr old male. I noticed a bump on my sternum. It feels like there is a raised, rounding. It is not painful and I can't move it.?

Get it checked... It's likely something harmless like a sebaceous cyst, but give it a week or two and if not completely gone definitely get it checked out by your doctor. It doesn't sound like it's something that needs to be seen today or tomorrow for though. If it's just under or above your collarbone that's more concerning and definitely get it checked by your doc.