And Joey the Mechanical Boy was so good, he was an autistic, that people would
hi there
1.whats meaning of "people would"
2.whats meaning of this part: I wouldn't, I couldn't tell one thing or another whether he was or--he seemed quite normal.

I'm thinking of one Dr. Bettelheim, head of the Orthogenic School in Chicago. One of his, in "The Empty Fortress," his book, he speaks of Joey the Mechanical Boy.
And Joey the Mechanical Boy was so good, he was an autistic, that people would--there were no wires, but he said there were wires. And he acted as though there actually were all kinds of wires. People, visitors would step over the imaginary wires or walk around because they believed Joey. So one day, Dr. Bettelheim asked if he could come to WFMT studios, he's interested in being a radio engineer, and I met him. And he's quite remarkable. I wouldn't, I couldn't tell one thing or another whether he was or--he seemed quite normal. He was Joey the Mechanical Boy and learning things from our engineer, listening, and I think he became a sound engineer somewhere else. But it's that constant, but it's that making others believe it's actually so.

Question

And Joey the Mechanical Boy was so good, he was an autistic, that people would
hi there
1.whats meaning of "people would"
2.whats meaning of this part: I wouldn't, I couldn't tell one thing or another whether he was or--he seemed quite normal.

I'm thinking of one Dr. Bettelheim, head of the Orthogenic School in Chicago. One of his, in "The Empty Fortress," his book, he speaks of Joey the Mechanical Boy.
And Joey the Mechanical Boy was so good, he was an autistic, that people would--there were no wires, but he said there were wires. And he acted as though there actually were all kinds of wires. People, visitors would step over the imaginary wires or walk around because they believed Joey. So one day, Dr. Bettelheim asked if he could come to WFMT studios, he's interested in being a radio engineer, and I met him. And he's quite remarkable. I wouldn't, I couldn't tell one thing or another whether he was or--he seemed quite normal. He was Joey the Mechanical Boy and learning things from our engineer, listening, and I think he became a sound engineer somewhere else. But it's that constant, but it's that making others believe it's actually so.

Answer

You should know that this is not formal English, and it might be described as very badly written. It appears to be a transcript of someone talking, and talking in a not-very-prepared way, so there are hesitations, false starts, changes of direction and grammatical errors. It's not easy to make sense of for a native reader !  So, your questions : 
"People would" is being used here to describe habitual action in the past - it's a normal usage.  See 
https://learnenglish.britishcouncil.org/intermediate-grammar/past-habits-used-to-would-and-the-past-simple
WIth " I wouldn't, I couldn't tell one thing or another whether he was or--he seemed quite normal" the speaker (writer) is being a little careful, a little bit politically correct ; the clue is in "he seemed quite normal". The boy is a mental patient, with profoundly unusual brain functioning, but the speaker is saying that he couldn't quite tell that just from watching him. And the speaker is trying to avoid using what he seems to consider an offensive label, in "autistic", so he starts, stops, changes direction - and gives you what is really a nonsense sentence. Often, in English,. we try to use the context and what we know of the people to make sense of what people actually say - and we need to do that in this case. I hope this helps.