Welcome to BYC!
As others have mentioned, it's not good to help a chicken hatch. It will usually
do more damage than good, and if the chick is not strong enough to get out on
it's own, it's usually to weak to live. However, I have helped four chicks this year
all due to humidity/temp/ and incubator problems. It is absolutely OK to help a
chick if it's been shrink wrapped, or if you think it's stuck due to somthing you
(accidently ofcoarse) Caused (Humidity/temp. issues). You need to read up on
how to do so, because you cannot bust them out quickly, you have to slowly
pick away at the egg shell with sterile tweasers until you get the baby out, putting
it back in the incubator to warm up for 1 hour, every 15-20 minutes. So, what I'm
saying is, this could be an all day process, so be sure you actually have to time
to be there for the baby. Heres some great links. You have to scroll down a bit in
the post on the 'how to help hatch thread', but toward the bottum of the post it shows
step by step how to help a chick, and lists all tools you may need.
Helping chicks ~ (Closer to bottom of the first post in this thread)
https://www.backyardchickens.com/forum/viewtopic.php?id=491013
More about helping chicks hatch
https://www.backyardchickens.com/forum/viewtopic.php?id=9316
Intervening
https://www.backyardchickens.com/forum/viewtopic.php?id=45583
When/if you get the baby out set them in the incubator to warm up
immediatly. You can give some electrolytes or sugar water
(3 tablespoons of sugar per quart of water) Once they are ready for the brooder.
Keep us posted and good luck!