I hope you mean freezer! Breastmilk should only be left in the fridge for 3-4 days.

It’s not legal to sell breast milk in California, but you can join the Human Milk 4 Human Babies California Facebook page and donate there.

There's a really cool group page on facebook where you can find local moms requesting milk !! I recently had to open up my old fb and found the group and just donated some milk to a baby.

Onlythebreast.com is a good place but a lot of people will expect a lot from you in terms of the way you store it, pasteurizing the milk before storing it, and shipping it with dry ice so it doesn’t go bad. And there’s a third party site they link which screens the breastmilk donors for things like HIV, Syphilis, etc. not sure if hospitals require the screening. But a lot of families on that site are ready to buy an entire freezer stash so it could be a good place to look

Check with a local hospital or there are milk banks you can call too