After replacing the battery, the dash lights are not working, and it will not start?

It sounds like you have a bad connection, or the battery has protective caps over the terminals that were not removed, or the battery is defective. Here are two guides to help you see what's going on:

https://www.2carpros.com/articles/everything-goes-dead-when-engine-is-cranked

and test if the battery has 12 volts.

https://www.2carpros.com/articles/how-to-use-a-voltmeter

Please go over these guides and get back to us.