When I open my trash I hear a ringtone.

Hi D_L_B,

Thanks for using Apple Support Communities. We understand you are hearing an unexpected notification from your device, and we want to help.

If this is a build in ringtone, you can change it but not delete it. See how here: Change iPhone sounds and vibrations - Apple Support

Can you also let us know what trash you are opening when you hear this sound? Is it through email? If so, do you have multiple accounts set up?

Thanks.