Steam has recently added tasks to get more max points, heres where you can find them
Go to https://store.steampowered.com/grandprix and scroll down a little, after you find it it's gonna show what you have to do for each task

https://gtm.steamproxy.vip/ugc/795364666822012425/3058166C8C64F4D4695091EAF10CF735AE2B3D64/
You gain 500 max points for each task and theres 4 of em, so you can gain 2000 for free

Made this guide cause no one is aware of this yet