summarization table does not has 'Show value as' Option.

Hi ImPranav 
You need in the first step select the type of aggregation and than how to show it:

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Hi again ImPranav 
I saw that with "graph on object" feature works in a little different way.
After step 1 of choosing aggregation, you need right click on a value to open the window of choosing how to show it.

Please also refer to my recorded screens: Link to recorded screens video 

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If you want to locate the data pane on the right side, you need to check off the option of "on object interaction":
From File << Options and settings <<Options << Preview features

After modifying you need to close and reopen the power bi desktop.

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Hi ImPranav 

I think you're at the point where you should create a date table and work with it.

Please refer to the linked guide:

https://www.datacamp.com/tutorial/how-to-create-date-tables-in-power-bi-tutorial

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Hi 24601 
Yes, it works for the measures too...but a little less intuitive:
instead of a left click, you should give a right click on the measure:

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