What is the settle price in stock options and its importance in profit and loss

In the below image you can see there is a option called as settle price. what this settle price stands for and what is its relevance and importance when it comes to profit and loss in respect to stock options?

consider image 1 below:

consider image 2 below:

which position for profit and loss is correct and why?

First image is from kite… Which shows your profit and loss as per the live option price during market… Whereas the second image is from q back office… Which will be updated only after the trading hours sometime in the evening… So kite is more reliable to check for your profit and lose.