I don't have a good answer for you. Shrink wrap is when the membrane around the chick dries out and shrinks around it, preventing it from zipping. There is no set time from pip to zip. Some only take a short time, some take well over 24 hours. As long as they can breathe through the hole they can live a very long time even when stuck.
The best I can do is link you to an article in the Learning Center above about assisted hatch. If you read this you should have a pretty good idea of what to do.
https://www.backyardchickens.com/articles/guide-to-assisted-hatching-for-all-poultry.72886/
The chances that you shrink wrapped that chick are pretty low but they are not zero. I've opened the incubator a few times when an egg had pipped to deal with an emergency. One time a chick did shrink wrap but all the other times they did not. I don't think you'll need to know anything about assisted hatch but it doesn't hurt to be prepared.
The best I can do is link you to an article in the Learning Center above about assisted hatch. If you read this you should have a pretty good idea of what to do.
https://www.backyardchickens.com/articles/guide-to-assisted-hatching-for-all-poultry.72886/
The chances that you shrink wrapped that chick are pretty low but they are not zero. I've opened the incubator a few times when an egg had pipped to deal with an emergency. One time a chick did shrink wrap but all the other times they did not. I don't think you'll need to know anything about assisted hatch but it doesn't hurt to be prepared.