According to Genesis 27:39-40, Isaac did extend to Esau the following blessing.
Behold, your dwelling shall be of the fatness of the earth, and of the
dew of heaven from above. By your sword you shall live, and you shall
serve your brother; And it shall come to pass, when you become
restless, that you shall break his yoke from your neck.
The natural world would be made to respond to this man's status before the Lord.
These blessings are immediate and temporal.
The blessing was to be affected meteorologically – “God give you the dew of heaven” – Literally speaking, dew assures agricultural productivity thus representing material prosperity. This is used many times in scripture as representing a source of blessing.
Agriculturally – He would enjoy “The fatness of the earth,” i.e. the choicest parts of the earth. The best the earth could produce.
He would enjoy abundance – Plenty of corn and wine – abundance of the bounty of the earth.
But, unlike the blessings to Jacob, Esau's blessing had no Messianic implications and his descendents would be subordinate to those of Jacob.