Thanks for the link & welcome to OG! So from that link I’m guessing if it was sufficiently dry it has a good chance of being viable. It would have an even higher chance if it were frozen rather than in the fridge.
You can store your pollen in the fridge if you choose, but be aware that the temperature fluctuations caused by frequent opening and closing of the fridge can lower the long term viability of your pollen.
Pollen collected and stored with care can remain viable for up to a year or longer. I have successfully fertilized female plants with pollen that is older than two years, but I have also had pollen that is only a few months old turn out to be completely sterile; it all comes down to eliminating contaminants from the pollen, keeping it bone dry, and storing it properly. A little luck helps too.