Everything is already up there.
If you have battle pass and have to do tasks, I'm at lvl 67 and already have the tasks. Attempt trz. Lvl 100. Then you not only have a lot of cool things but if you bought a battle pass for 950 you have 500 profit. So you get 500 V-Bucks.
So I rat to be at least Lvl 100, then you have a lot of rewards and after that there are only the golden skins etc. For Neymar and one two other things you have to do tasks for the skins that are behind the hundred where you don't have any extra tasks have to do, for example Neymar 2 Style you have to e.g. Complete 60 epic missions. But it is always there too.