So sorry. You can flush wounds with Chlorhexidine (hibiclens), diluted betadine, or plain, mild soapy water. For the beaks, be careful that they don't aspirate any while flushing, be careful there. Work on stopping bleeding first if necessary. Treat for shock first, try to get them drinking, electrolites if you have them, gatorade can work, room temperature or slightly warmed for birds that are shocky. For birds with beak injuries, those can be very painful and may put them off food and water. Tubing might be necessary if they don't start eating and drinking on their own. Put food (moistened with water to make a soft mash) and water in larger, deeper, open dishes for them, it will make it easier for those with injured beaks. Once the wounds are cleaned and dry, apply some plain neosporin or plain triple antibiotic ointment to keep the wounds covered and moist (hard to do with a beak injury), reapply as needed.
Beak injuries harden up over a few days and get less painful then. When you have time, some pictures of injuries would be helpful for specific advice.
If birds lose their beak, they can often adapt and do well with a little extra help.
Link to one story, when you have time:
https://www.backyardchickens.com/articles/chicken-has-no-beak.73534/
I had a bird scalped, treated as above and she recovered fine, picture below.
Info on tubing fluids and food, if it becomes necessary:
https://www.backyardchickens.com/threads/go-team-tube-feeding-updated-12-29-2019.805728/
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