Could someone please explain how to get frequency response of a given Bode Plot?
If your question is how to use this graph to find the transfer function the answer is simple : you can't. 

First of all, this graph give only half of the information: you have a gain plot but not the phase plot, and 2 systems with different TF could have the same gain profile.

Second of all, this is obviously an asymptotic graph, as it presents a discontinuity around the cutoff frequency. 

However, you could extract some information from this plot. You can see that it cuts the high frequencies with a slope of -20dB per decade, which means that there is a great chance that it is a 1st order low pass filter. Additionally, you can also read that  the cutoff pulsation is about 0.1 rad/s.

Think of it like a normal function, would you be able to tell what a function is if you any saw an asymptotic graph of one half of it? All you can do is make some educated guesses about the form of the TF.