By default, each season lasts for 7 days or 1 week.
PVP has a concept of a Season. The duration of a season is subject to the CryptoBlades team. A season can run for a few days, weeks or even months.
In a season, there is a prize pool for Free for All and Every Tier. This will incentivize players to continuously perform PVP battles to get the elusive PVP Rewards Pool.