Can I cash a money order that hadn't been filled out or sighed yet even still has the receipt attached to the check part I am having such a hard time getting it cashed it's my money order and I don't need it anymore

Don't know but just bring to the bank that you got the money order from along with your ID and they will cash it.

Deposit it in your bank account

I don't think they will but if they don't bring it back to the bank or fill in your name and cash it

No

Give a try in couple different Walmart someone will do it.