Need Advice PLEASE <3

Hello,

I have a 5 month kitten and I got her at 3 months and ever since she always had watery eyes and tends to get a lot of crusty gunk in her eyes. She also sneezes more than most cats. She has a lot of energy still. She is strictly indoors and has had all her vaccinations. I don't know what she has or what I can do to help her runny nose and eyes. 

Another problem is she does not clean her nails. I started to retract her nails (I trim them) but noticed there is crusted hard litter on her nails and she hates it when I try to clean it by using my nails to scrape against it. Is there anything I can do for her nail care?

I'd take the cat to the vet. She may have a respiratory infection that needs treatment.

Most cats will chew and lick at their claws. Your cat might just be doing this when you're not around so I wouldn't worry about it. Claws just need to be trimmed by you. Is it just litter that is stuck to the claws? Are you using at least 3 inches of litter in the box to fully absorb urine?

I just always look at her paws and she has a little bit of poop, and litter stuck to her paws and when I retract her claws there is dried, hard, litter that  I have to scrape with my fingers.