How do players progress in gta online?

The Wikipedia entry for Grand Theft Auto Online summarizes the game as an online multiplayer action‑adventure component of Grand Theft Auto V, set in the fictional state of San Andreas. It notes that up to thirty players can roam the open‑world environment and engage in cooperative or competitive game modes. However, the excerpt does not describe the specific mechanics or systems that govern player progression, such as missions, career levels, or in‑game currency. Consequently, the details of how players advance or develop within GTA Online are not covered by the given evidence.