Royal Jelly is to deposit HoneyBee's native token, BEE, to earn 3rd party tokens such as BNB, BUSD, BTCB and so on.
Royal Jelly is a fork of PancakeSwap's Syrup Pool.
You can find more details here.
There will be various kinds of Royal Jelly pools before the official start of layer 3 farming.
There's 3% of withdrawal fee until 3 days (86,400 Blocks) after deposit.
After the block, the fee becomes 0%.