I bought an Apple Watch series 5 and not able to get into the watch without the previous owners Apple ID and password. I can not get ahold of previous owner
How am I able to get into the watch without the previous owners Apple ID and password?
Sorry the Watch will be useless to you.
Activation Lock is a theft deterrent feature with no bypass or workaround.
Without the owner's authorisation (Apple ID & password), no thief or anyone including you can re-use the device.
You can recycle the device responsibly.