I bought a iPhone 6s+ from someone on offerup the phone has a iCloud lock would I be able to get passed that? Because I really need it?

I bought a iPhone 6s+ from someone on offerup the phone has a iCloud lock would I be able to get passed that? Because I really need it?

No, there's no way to bypass it, you need the account holder's password. So it's most likely a stolen phone.
If the thieves could bypass the iCloud lock themselves, they'd do it and be able to sell it for a lot more.

The phone is likely stolen which means you now own a nice desk paperweight.

No.

Try to get a refund.

The iCloud Activation Lock is there for a reason & of course is made not to be bypassed.