Have young bee balm plants but too late to plant what can I do?

Question

We live in upstate Pennsylvania zone 5a and I just received three young bee balm plants and we are getting a frost tonight

Answer 1

If it were me, I would keep them indoors for the winter, perhaps in a garage or greenhouse, and transplant them in the spring. They will die back, and you only need to give them a light watering through the winter - just enough to keep them from drying out completely. They should begin to grow again in the spring.
https://www.gardeningknowhow.com/ornamental/flowers/bee-balm/bee-balm-care.htm