score:3
You can make pretty impressive business cards, with a company name on it and a function you 'do' within that company.
But make sure you have the right to make those cards, to hand them out and to claim to be what the card shows.
In many countries you can start a business without having to jump through hoops like getting it registered. And when you have one such a company you can call yourself the CEO of it, have a working e-mail to that company and a website.
But on checking it will show you are a newly started or a false front business and if you fall in the hands of a police officer who is a bit more savvy and checks your claims, you can get in deeper trouble than if you had not used that card.
It would be better to have a business card from your current job, with your actual function on it, with the business e-mail address and telephone number, so that if you do run into trouble and you are checked you will not get into more trouble because of the card you hand over.
Whatever you do, never claim to be a diplomat, as that is easy to be checked.
Real diplomats have special passports, they are known by the country they claim to be diplomats for and so on.
If you are claiming to have official status and it shows you do not have it, they can hold you till it has been proven who you really are, whether you have something to hide and they may suspect you of something worse, like being part of a network of people working against the country, being a spy or whatever.
Never lie to the police, and officers of justice and border control, as when found out it will make your problems much worse.