How can i fetch "value" from each object array in the given collection to plot it on time series?

I am unable to fetch each “value” field . how can i do this ? Do i have to use for loop ? And how one can plot it on time series plot for data analytics.

Please do not post the same question in multiple thread.

It slows us down because we need to read duplicate.

Already answered How to fetch date iterating through each document? - #2 by steevej