You need to be patient in order for Combees to make honey. A Combee
can produce a Honey Jar in about 3-4 hours. While, when all the
combee slots are filled which are 5 slots, then, in about 12 hours,
they can completely fill their honey capacity unless you claim
them. (Each Combee will produce 3 maximum, so 5×3, 15 honey jars
they will produce maximum, if you don’t claim them).