Color grading

I just get Fuji X-H2S and want record some videos with f-log, should I color grade before uploading or just leave it in raw?

And one more questions, Should I upload in ProRes 422 or ProRes HQ, I recording in H.265 LongGOP 420 MOV (HEVC codec) to save space on card.

Get it color graded in camera, save yourself the time and headaches of doing it in post

If you're shooting in LOG, my suggestion is to edit and not upload raw.
Buyers want quick and a lot will pass up flat footage for something that is graded.
Either they don't know how to edit LOG footage, don't want to take the time or just lazy. But for the most part it won't sell because you're limiting your audience to people that want to take the time.
As to Prores, That's all I upload for years. Not that people have asked for it. These days they may not even care.
But it's my workflow and as someone that also edits footage I love working with prores so there is that.
Also, my cameras shoot 10 bit so why squish it down to an 8 bit codec.

I upload 422 not HQ Unless someone says different, I mean from a buyer that's what I'm sticking with to save space on my hard drives that I back up to.

Thank you all. After playing with videos for past week I figured out it will be best for me to shot most of my footage already graded by camera as first post says to save time, probably will use log if there will be a lot of shadows and highlights. Probably will shot Prores HQ 4k 59.94fps and H.265 4k 120fps in camera (10bit all) but upload some in ProRes HQ (probably more detailed footage with fast moving subjects or objects) and all other in ProRes. I don't care about hard drive space if somebody ask, I have my own server with lot of TB with plan to upgrade with a lot of more TB anyway.