I want to plot bond length and bond angle distribution but I could not fetch bond length and bond angle values from POSCAR file. I would be grateful if somebody helps.
an easy way to get bond angles and bond lengths is to use a visualization program. With VESTA (https://jp-minerals.org/vesta/en/) for example, this is extremely simple.
However, to extract large number of bond lengths and angles automatically is a different problem entirely. For this I would write some python code specific to your type of structures, but to make this general, I assume that some work will be required...