"I have a little money."
Translation:मेरे पास थोड़े पैसे हैं।
It's because थोड़े पैसे is the subject of the clause 'थोड़े पैसे हैं'. Think of the literal translation of the Hindi sentence, 'With me is a little money' where the 'is' agrees with 'a little money'.
Yes. It is the plural of पैसा. Though it's commonly used as a general term for money, it is actually a currency unit (a hundredth of a rupee) which makes it a countable noun. In fact, रुपया (rupee) can also be used as a general word for money though less commonly than पैसा.