What will I see in oscilloscope when attempting to analyze Bluetooth or Wi-Fi signals?
Nothing. That is, you'll just see a flat line, as if there's no signal. It's too high frequency to see.

The input stage on a 50 MHz scope is not configured to pass a 2.4 GHz signal. It'll be filtered out, and you'll be left looking at the (probably nonexistent) low-frequency components of the signal.