Kindly refer to the following links:

Are we rewarded for watching Islamic programs or lectures?

If I do a good deed without intention for sake of Allah (due to nature Will I be rewarded)

Also see: https://assimalhakeem.freshdesk.com/support/solutions/articles/31000146611-must-i-know-the-reward-for-an-act-before-doing-it-to-get-rewarded-