Generally < 1 is low, between 1 and 3 is in the middle ground, and > 3 is high. However, that all depends on margins, which is why people generally use P/E or forward P/E rather than P/S to compare multiples. Issue here being that P/E is nonsensical for unprofitable companies or companies with very low margins. Spacex's P/E after Google pushed them into profitability by a slim margin would look absolutely stupid.

I would also like to point out, that on a forward P/E basis, AAPL is quite overvalued compared to historical norms, but basically every tech company is right now.

Most companies have a P/S of 1 or 2, almost all have it bellow 4.

A few segments of the economy are known to have low revenue/investment ratios, and companies there get P/S up to 7 or so.

Then, very few companies have people betting on their growth so much that their P/S get as high as 15.

And then you have literally about half a dozen exceptions on the ones S&P tracks that get higher than that.

Nothing about Apple is representative of a normal business.

It’s an interesting phenomenon: being Apple is one of their key sales drivers. The brand is worth more than the business itself.

You're arguing with people who have no idea what they're talking about.

Who's arguing?