Hello @DomLOL
Unfortunately I can't max out your Youth Facilities as the IGE is disabled in your Save Game.
Looking at your save I see your Youth Facilities are listed as 'Good' and the Board recently finished upgrading them. So they don't seem completely against it.
They are many factors that go into a board interest, club vision objectives, (in your case none of your club vision objectives are to do with developing youth) what league are you playing in, what is your club reputation. etc.
Plus if your Youth Facilities have been improved recently (say around 12 months) then it's unlikely they'll agree that soon again - they're not just going keep blindly upgrading, that's not how it works in game or IRL.
I see your trying to do a Build a nation save in Gibraltar, this is a small nation where football isn't a priority and they have a very low rep for producing talent which means your board are more likely to be far less interested in upgrading the facilities. But if you keep doing well in the Champions League and growing your club/league reputation this can improve over time.