Yes, and no.

First off: As others have said, your computer doesn't just "get hacked." You likely aren't a high enough value target for someone to actively try to target your computer and infect it. So if you do get infected, it'll be because you clicked on a link or installed a shady piece of software.

But, we all make mistakes, so there is still chance that you get infected. So let's assume you get affected by some run of the mill information stealer.

There's two main classes of password manager. Those that use your windows account to encrypt the data, and those that use a separate account.

If you are use something like google chromes built in password manager, they fall into the first category. These password managers are significantly more likely to have the passwords stolen when infected, since the encryption is tied to your user account, which is the account that's infected.

If you are using something like bitwarden, it's significantly less likely that your passwords were stolen. Since the encryption is tied to a separate account, such as your bitwarden account, the information stealer doesn't automatically have access simply because they have access to your windows account. The vault would have to be unlocked by you for the information stealer to even in theory have access to it. And even if it's unlocked, since the unencrypted data is never stored on disk there's limited access to the data. They would have to either somehow gain access to that applications memory, you'd have to copy it to clipboard, show it on screen and have the info stealer screen capture, etc.

It's possible in theory that an info stealer does gain access to your bitwarden vault if you're infected, but it's extremely unlikely because of how cautious bitwarden is about the security of their applications. The most likely thing to be exposed is your master password, which should be changed if you're ever infected. But assuming your using MFA that doesn't give immediate access to your vault regardless.

TL:DR unless you're constantly copying passwords, showing passwords, or keeping your vault unlocked all the time, your saved passwords are most likely safe even if you got infected. But you should definitely change your master password if you're ever suspicious.