There have been several efforts to make Puerto Rico a state, but none have been successful. The most recent effort was in 2020, when a referendum on statehood was held. The referendum passed, but it did not have the force of law. Congress would need to pass a law to make Puerto Rico a state.
The issue of Puerto Rican statehood is complex and controversial. There are many factors to consider, including the economic impact, the political implications, and the cultural identity of Puerto Ricans.