@BarbuDreadMon Ok…
My bad, sorry i’m not english native, so sometimes i dont understand clearly…
So i change the core for 1941j.zip from fbalpha CPS1 to fbalpha_Libretro.dll and it works…
I’m shame 
I will check for my other pack.
I made a build with separate folder like for Banpresto, Visco etc to have different bezels in retroarch.
Edit : So as i made different folder i try few games from different folder :
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Banpresto Mazinger : Wrong
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Irem Air Duel : Ok
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I check in the hiscore.dat, Mazinger is here. I will select another zip from 0.43 maybe to test.
So as to be clear if someone find this post and have the same trouble.
- My first mistake was to save hiscore.dat with right click on it (i know, i inspire guys for dumb & dumber movie) so it was an .dat with html code inside. The correct file is like less than 300ko
- So open the link file (from there : https://github.com/libretro/fbalpha), copy and paste all the text in a notepad and save it as hiscore.dat
Use fbalpha_libretro.dll core for all your games if you want to save hiscore.
And at this point some games will never save hiscore but for other one you find in the file it should work.
@BarbuDreadMon let me know if i’m correct now? Thanks for your help 