How long do old bottles take to open up

Twich22 thought this was worth mentioning said

I’m sure every bottles different but is there any rule of thumb as to how long you should give an old bottle to open up? For example, I have a 20 year old Wellington victory 3 liter that I want to serve at a party some time, so how long before the party should I pop the cork? What about even older bottles. Thanks for any advice!