Is it possible to Batch Create Posts? or Upload CSV to make posts?

Assuming your CSV is in the format of title,date,content you could do something like this:

if (($handle = fopen(‘./path-to-file.csv’, ‘r’)) !== FALSE) {
while (($row = fgetcsv($handle, 0)) !== FALSE) {
$new_post_data = [
‘post_title’ => $row[0],
‘post_date’ => $row[1],
‘post_content’ => $row[2],
];
wp_insert_post($new_post_data);
}
fclose($handle);
}

You will of course need to tweak this code a little but it’s absolutely possible to do what you are asking.