I need to know how to get to the blend door?

Hello,

The blend door actuator is located behind the right side of the dash.
In order to access that actuator, you will have to remove the dash assembly.
Which will require you to remove several bolts and fasteners. Keep in mind to be careful not to damage those clips or the dash trims.

https://www.2carpros.com/articles/replace-blend-door-motor

I have attached diagrams for your reference.

Please let me know if you have any questions.
Thank you.