In the new Fortnite update they added battle pass season 3, the best way to level up your new batte pass is by using the new weekly challenge feature. By completing this you will be able to get up to tier 43 just by completing this. The next best thing is by completing your daily challenges, these will grant you quite a few tiers. On your journey from tier 1-100 you will be levelling up this will grant you multiple tiers as well. The sad thing is that when you complete all of these you will only be at level 99, this means you will be required to purchase a tier. Smart on Epic Games for doing this. Hope this helps out.
