The last Bitcoin is predicted:

to be mined by approximately the year 2140. The number of bitcoins entering circulation via mining (known as block rewards) drops by half roughly every four years. These events are known as halving. When bitcoin first launched, the reward was 50 bitcoin and then halved to 25 bitcoin in 2012. In 2016, it halved again to 12.5 bitcoin. The most recent Bitcoin halving took place on May 11, 2020, with the next halving likely to occur in 2024. You don’t have to be a miner to earn Bitcoin however. You can sign up for a rewards program like this one and earn coins when you shop.