Until Monday 19/07/22 you can buy Hilton honors points with a 100% boons via this link
It seems at this moment that different members are targeted for different offers so you’ll want to log into your account and check what you’ve been targeted for,
The minimum you’ll need to buy inn order to trigger this promotion is 5000 points.
Annually you can usually buy upto 160,000 points, however that cap is now doubled to 320,000
Don’t for get that you can always transfer your points from American express at a 1:2 ratio.