summon skeleton ~ ~1 ~ {CustomName:"\"骷髅\"",HandItems:[{id:"bow",Count:1,tag:{display:{Name:"\"bow\""},ench:[{id:48,lvl:1}]}},{}],ArmorItems:[{},{},{},{id:"golden_helmet",Count:1}],HandDropChances:[2f,0f]}

2021.12 数据，可能有更多内容

summon skeleton ~ ~1 ~ {CustomName:"\"骷髅\"",HandItems:[{id:"bow",Count:1,tag:{display:{Name:"\"bow\""},ench:[{id:48,lvl:1}]}},{}],ArmorItems:[{},{},{},{id:"golden_helmet",Count:1}],HandDropChances:[2f,0f]}

不叫ench了。好像改为Enchantments
你可以附魔物品后丢地上data get看看

其实我也明白1.13肯定改了点啥，但是翻遍wiki都没找到（可能是眼瞎），所以来找个明白人问问