Where is the habitable zone of a Hypergiant? Where would an Earthlike planet need to be so it's still in the 'Habitable Zone' of a hypergiant Star, compared to the distance of the Earth from the sun?
Could complex life develop or survive on such a planet?

It's not necessary to answer the second question, as it is not really related to Astronomy much. But if someone could really answer that, I would be grateful.
Some background
I was watching this video of Kurzgesagt ( that's a YouTube channel.) which was released only some days ago, and the video spoke about the comparison of the Sun to some of the largest types of stars out there. The video also mentions Giants and of course, Hypergiants.
This made me think about what would happen if our very own Sun, turned into a Hypergiant.
As in the case of Betelgeuse, it isn't really meaningful to talk about the habitable zone of a hypergiant. These are massive, short-lived stars that don't last long enough for terrestrial planets to form: their evolution is measured on timescales of only a few million years. Their progenitors are very hot O-type stars that are highly destructive to protoplanetary discs, eroding them with extreme ultraviolet and X-ray emissions. Even if you did manage to form a terrestrial planet there, there wouldn't be sufficient time for the magma ocean to cool before the star undergoes a supernova or collapses to form a black hole. The intrinsic heat of the planet would likely keep water as superheated steam in a rock vapour atmosphere. Furthermore, these stars undergo extreme rates of mass loss, which would make the space weather environment very hostile to maintaining an atmosphere over long periods of time. This is not an environment where you would find Earth-like planets or life.
As for the question of what would happen if the Sun turned into a hypergiant: it won't because (fortunately for us) it is not massive enough to do so. Such a scenario is in the realm of fantasy so it isn't really possible to say: once you're invoking wizards and magic sufficiently advanced AIs with the technology to do this then all bets are off.