There are many out there. Just be sure they support:
PHP 5.6 (for phpVMS 5.5.2), PHP 7.0-7.2 (for phpVMS 5.5.2.72), PHP 7.3+ (for phpVMS 7)
MySQL 5.6-5.7 - or MariaDB 10.1 (for phpVMS 5.5.2 or 5.5.2.72), MySQL 5.7+ - or equivalent MariaDB or Percona (for phpVMS7)
Comes with cPanel or another easy to use panel to access your hosting account.
Since you are on phpVMS 5.5.2 - look for a host with PHP 5.6, MySQL 5.6 or MariaDB 10.1 and cPanel hosting account access.
Maybe some other members can provide specific recommendations.