Hello, I dropped the bike from standing and also had a front end collision later. The damage is from dropping the bike from standing because I can see the crack in a much older photo from after the collision. It has not changed much. However, I get worried it is suddenly going to bust on me and I am not very experienced with carbon fiber. Thanks. A bike shop has looked at it and ok'd it, but I am still concerned when going down hills.
What is visible in the photo is a paint scratch. Letting the bike simply fall over will not structurally damage carbon fiber composite. People seem to think CFC is fragile but it’s really quite robust.
The fact that you had a collision is much more worrying. How hard? At what angle?
Hard, head-on collisions can certainly damage the frame or fork. The stresses are higher in the head tube or steerer area as the fork acts like a lever. Often damage to the head tube can occur but the fork is un- (or less) damaged.
Strangers on the internet, no matter how knowledgeable or well intentioned, will not be able to diagnose internal damage to any part, no matter what it's made of.
Your local bike shop may be able to diagnose it.
For real confidence, find a local frame builder, preferably one who works in carbon fiber and pay to have it inspected. Yes, pay. He's a professional and makes her living this way, and you want quality advice, since it's your neck on the line. The advice in this answer I wrote a while ago, though addressing a steel frame and head-tube damage, applies equally to your potential fork damage.
No, I'm not a frame builder, but I did know one when I was a kid. He spent many years in school and many, many years perfecting his craft. He took immense pride in his work and letting something out of his shop that he felt was dangerous was something he would not do. After finding that same attitude and level of pride with the builder who examined my frame after my wreck in college, I can't imagine a single frame builder who would do different.