We’ll have to double-check this with Brian Pennie, but think the biggest hit of dopamine we experience comes before the actual reward when we’re actively desiring achieving the reward.

This covers the topic in an interesting if controversial way: The Biology of Desire: Why Addiction Is Not a Disease https://www.amazon.com/dp/1610397126/ref=cm_sw_r_cp_api_i_PKhzCbMDT6X5A