How much time it takes for pending robux to arrive?

Hey! So I just got donated 10 Robux(After 30% of them stolen from Roblox so I have 7 now) and I was thinking it would take a week to arrive. However, its been almost 3 weeks and they never arrived?
The game link is

to see that someone donated 10 robux. It still says pending robux(7)


For me it takes about 6 days but Roblox is sometimes nice and lets you claim it early. [not claim, recieve]