String comparison in if statement

I have the following Bash script, but I get an error in the predicate of my if statement. What am I doing wrong?

#!/bin/bash 
$UQ = "noqueue:" 
read -p "Aadress: " email
id=$(grep $email  mx.log | grep status | awk '{print  $6 }') 
read b <<<$id read 
a <<<$email 

if (($id == $UQ )); 
then 
    grep $email mx.log
else 
    for((i=0;i<${#a[@]};i++)); do
        for ((j=0;j<${#b[@]};j++))
        do
           c+=(${a[i]}:${b[j]});
       done 
    done
    for i in ${c[@]} do
       echo $i 
    done 
fi