I'm watching Tarzan right now so I decided to look this up, but even though we're really similar to each other and both members of the primate family, I highly doubt that a gorilla could raise a human child. Sure they probably could take care of them for awhile like in the following video, but not until they reached adulthood.
https://www.fromthegrapevine.com/lifestyle/legend-of-tarzan-could-gorillas-raise-human-child
https://www.fromthegrapevine.com/lifestyle/legend-of-tarzan-could-gorillas-raise-human-child