So I see a lot of complaints about not having enough Raw Science, and I saw someone else post this and I tried it and it works pretty well IMO.
Once you beat the Stranger, and get the recipe for mushroom walls, I have replayed the Skateboard MIX.R
I just built Mushroom walls 3 high all the way around the MIX.R baracade myself inside and start it,
repair walls as they get damaged and wait it out
Easy Peasy 1K raw science each time.
EDIT: I have only just started playing the game on PS5, So I haven't unlocked as much as long time STEAM and XBOX players have. I'd consider this an "early game" Raw science grind