Is anybody allowed in a church?

I havent stepped foot in one in maybe 15+ years, im unsure if a guy like me is welcome anymore. I spoke with a buddy the other day that shifted my perspective on religion and ive thought about trying to rekindle a relationship with god. But i worry id be kicked out? Im covered in tattoos, i dont own any nice clothing, im not sure if theres a dress code for services? If i were to basically hide myself in a corner and hope nobody notices me would that be alright?