How to create new MySQL database with encoding via BASH script

I have one bash script for installing wordpress and want to add also mysql installer to easly can install database

#!/bin/bash

dr=$1
db=$2


zDir="latest.zip"
wpInstall="https://wordpress.org/"$zDir

eval "mkdir -p "$dr" && cd "$dr" && wget "$wpInstall" && unzip "$zDir" && cp -r "$dr"/wordpress/* "$dr" && sudo chmod -R 0777 "$dr" && sudo chmod -R 0777 "$dr"/* && rm -rf "$dr"/wordpress && rm -f -r "$zDir" && echo WordPress installatio$

echo "CREATE DATABASE IF NOT EXISTS `"$db"` DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci" | mysql -u root -p

here I have one realy wierd problem:

When I run script like this:

$ ./install-wp.sh /var/www/test project_something

installer install wordpress, place all files on the rigt place but when start part with mysql I get 2 errors.

First is:

> ./install-wp.sh: line 13: project_something: command not found

and second after mysql passowrd is entered:

ERROR 1064 (42000) at line 1: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci' at line 1

How to fix this?