Cracked iPhone lenses

I have dropped my phone and have a line across the lense , it it affecting the quality of my photos , I am devastated as I love photography doe anyone know the cost of replacement by apple.

I have such a god cover on my phone I never have drop it I found it so weird how that happened :( to crack without straight impact on it. First time that I have decided not to get apple care due to financial reasons. I have not called apple yet but I can’t find in their site lenses replacement information. Thank you