I've recieved only a portion of Brave earned rewards today

Hi @Pratheek, there will be some days where you get no ads, I call them ‘slow’ days :upside_down_face:
You can check how many active campaigns are running in your country here (scroll down a bit):

And you can see which ads are specifically running for you here:
https://sampson.codes/brave/ads/my_region/

As for payout amount, some of the BAT earned close to the payout date will be held over to the next payout date - it’s happened to me, too.

If you are having some issue with this payout date, read this post by Support and follow it for any updates: