There are two issues here, rinnie. The main issue is how do Lutherans do it?
The answer is confession is offered to a Lutheran in 2 forms. One is corporate/public confession during a typical divine service on a Sunday morning. The second form is in private confession to a pastor/confessor, which is probably not dissimilar to Catholic confession, at least in form if not content. In Luther’s small catechism, he outlines how we might confess, and this is the format that one will usually see in a Lutheran setting, regardless of synod.
bookofconcord.com/smallcatechism.php#confession
The second issue is the question of validity of Lutheran clergy, and therefore sacraments, as most, though not all, Lutherans are outside of apostolic succession. Without going into too much detail, this is a disagreement our communions have with each other. Sufficient to say that the Lutheran Confessions point to divine law and the historic use of presbyter ordination even within the Church prior to the Reformation. That’s not to say that Lutherans don’t value or reject AS. In fact, we believe it is desirable and preferable, as it demonstrates the unity of Christ’s Church. So, to answer your question, “*Now I thought that the only way that anything could be valid in any Catholic Church it had to be in communion with Rome? Now is your Priest ordained and does he have the sacrament of Holy Orders to offer the forgiveness of sins. *.” Rome says, no he doesn’t. Our Confession says, yes he does.
OTOH, Lutherans recognize the Catholic priesthood and sacraments as valid.
Jon