hello!I'm from Philippines and this is my first to travel.

Ellen, you can enjoy free entry to Macau for a stay of no more than 30 days, so you just need to take your passport, the return ticket, hotel reservation and enough travel fees with you.
As for your budget, you may need to prepare at least 5,000 MOP as the show money when you go there. I think if you just stay for 3 days, 50, 000 pesos may be enough, but it doesn’t include your air tickets.