After washing my car at the car wash it will not start?

Hello,

Did you clean the engine as well?
It is likely that water got in the engine and that could prevent it from starting.

Have you tried to jump start it?

https://www.2carpros.com/articles/how-to-jump-start-car-battery-using-jumper-cables

An engine will need spark and fuel to start so if you have water in any of the components that can prevent that from happening.
Look for any water under the hood on any of the electrical components.
You might want to check to see if you are getting spark to the plugs.

https://www.2carpros.com/articles/how-to-test-an-ignition-system

Please let me know what you are able to observe and if you have tried anything else.
Thank you.