Just for your info: we've been upgrading bda.plone.shop in our latest project and released the packages for Plone 6 (thank you @rnixx !) ... these are the current released versions with its pinned dependencies used in our project:
# BDA SHOP
bda.intellidatetime = 1.4
bda.plone.ajax = 2.0.1
bda.plone.cart = 2.0b1
bda.plone.checkout = 2.0b1
bda.plone.discount = 2.0b1
bda.plone.orders = 2.0b2
bda.plone.payment = 2.0b1
bda.plone.shop = 2.0b1
bdajax = 1.14
collective.js.datatables = 4.1.2
csv23 = 0.3.4
node.ext.zodb = 1.6
plumber = 1.7
pycountry = 23.12.11
repoze.catalog = 0.9.0
souper = 1.1.2
souper.plone = 1.3.1
yafowil = 3.1.0
yafowil.bootstrap = 2.0.0a1
yafowil.plone = 5.0.0a2
yafowil.widget.array = 1.7
yafowil.widget.autocomplete = 1.7
yafowil.widget.datetime = 1.13
yafowil.yaml = 2.0
zope.index = 6.1
NOTE: our ClassicUI Plone 6.0 project uses the alpha releases of plone.staticresources and plonetheme.barceloneta for Plone 6.1 so these versions will also work in Plone 6.1 (if not, we're updateing them accordingly 
)