Pets, Gamepasses, Countdown & Rebirth?

Hi everyone, my name is Lucas and i'm testing a game, I would like to know how I can do these things, if somebody is gonna help me, I will do everything that I can.

I have a store, already a gamepass button that works, but I don't know how these gamepasses can work:

x2 Lifting Speed ( The cooldown of a normal player while lifting is 2 seconds.)

x2 Speed ( Normal Speed 16)

x2 Coins

Infinite Coins.

How can i make a countdown of 15 days, 24 hours, 59 minutes & 59 seconds.

I have a pet store, with a unique pack that contains 4 pets. How can I make the pack work, so that everytime that someone buys it, he get the pets.

I need the pets to give a multiplier of coins.

And last thing, the impossible one.

A Stage shop, basically it's a rebirth, that you can buy with robux (in my game). Basically when someone buys it, i need the product to give a coin multiplier and specific speed.

How can i put my animation in a tool, with a sound too..

It's impossible if you are not a good scripter, but i hope that you can help me!

Thank you so much for reading this message, this is my first time here, so i'm sorry if i did something wrong! Bye, have a nice day (It's morning in my country).

This isn't a request site and if you have no idea of how to script I wouldn't be this ambition with games like yours. If I was you watch a couple of videos on the basis of lua then watch videos of people doing similar things or get models and edit them to your liking? EDIT: You also asked for a lot of stuff stick to one thing at a time