What if a country on a airport is not allowing me to enter?

In most cases they put you in a cell until they send you back to the country where you did came from. They only can send you back to the country where you did came from. Mostly they ask the visitor to buy a ticket back, but if you don’t have many or refuse to pay one, they buy a ticket back for you, unless you have cash money.

Such procedures are in the most countries 2 weeks, because mostly there are no empty planes to send you back.

There are no countries which gives fines, but on most airports they act very bad and refuses that you can take some food and drinks from the shops (they give bad food). They don’t need to give of have any reason to not accept you in the country. If you have a visa and you don’t carry anything illegal, they don’t refuse you. The chance that you get refused with a legal passport to stay is big, especially in racist Arab countries.