Some Fermi estimates:
On the lower end, 4 words/second times 16 bits/word times 4x10^8 seconds adds up to to ~3x10^10.
On the higher end, assuming 10^7 bits/second (about the retina-to-brain bandwidth), it adds up to ~4x10^15.
However, I think the brain is much less data- and compute-efficient than an optimal AGI algorithm would be. So I don’t think it is a good predictor of how much data future AI algorithms will require.
In the limit of superintelligent optimization, the things that look the best to an LLM grader are not generally the things that we value.