There are no legal restrictions on the sport of archery in Poland, and I would very much doubt it if there were any restrictions on bringing them to Poland as they will go with the main luggage and not as hand luggage; however, it is still best to check. And there are many clubs in Poland as my wife's cousin in part of the Medieval reenactment society in Poland, and they are affiliated to the Archery Society of Poland. LINK there is a email link at the bottom of the page where you can ask advice.
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Archery Clubs in Poland/Bielsko-BiałaI'm going to be in Bielsko, again like I am every year. Does anyone know of any archery clubs or maybe places to get lessons from in and around Bielsko-Biała?
Maybe some indoor/outdoor shooting ranges where I can borrow equipment, pay a by-the-hour fee and shoot?
Here I found the list of archery clubs in Poland [orca.mila.edu.pl/~e_rybarczyk/kluby.htm] and the 1st on the list is in BB but I've got no idea about archery, so not sure IF it even still exists, I've just googled it up.