Sure, he learns it and is able to wield it for a certain period of time, but somebody else gained this ability long before Goku ever did. This person was known in legend as the Super Saiyan God.

Dragon Ball Daima is now one crucial step forward to bringing Super Saiyan 3 Goku back to the center of the action ...

This form combines the divine power granted by Super Saiyan God and the Saiyans ability to transform to reach greater heights ...

From here, his lack of urgency even when taking on Super Saiyan 3 Goku was incredible ... his already overpowered Destroyer abilities, keeping back every God of Destruction all at once.

Dragon Ball Super has revealed the next stage of Goku’s Ultra Instinct Evolution. Like Super Saiyan, Ultra Instinct is quickly being developed to have multiple stages of evolution and upgrades ...