How to echo data from mysql query

I want to show the data, that has been entered mostly to a column in wordpress. I have this columns in my custom wp database;

field_name  field_value
id          1
entry       489
Submitted   indirimdeki
IP          212.156.66.142
id          1
entry       689
Submitted   indirimdeki
IP          212.156.66.142
id          750
entry       indirimdeki
Submitted   212.156.66.142
IP          1
id          790
entry       zamli
Submitted   212.156.66.142
IP          1

I need the most popular Word in column “field_value” according to “field_name”. There ara numbers and words in that field and i need only the Word that has been entered mostly.

I try to do that with this code;

$maks = $wpdb->get_results( 'SELECT MAX( field_value )
FROM wp_cf7dbplugin_submits
WHERE field_name = "Submitted"', OBJECT );
echo $maks;

but the output is “ARRAY” only.

How can I manage it?

Thank you very much.