Question about CV

Check bundle list: https://www.steamgifts.com/bundle-games
If it is there there (precise package name), then you get 15% of the full US Steam store price as CV. If it is not there, you get 100% of the US Steam store price in CV.
As for how much is needed for level 2: https://www.steamgifts.com/discussion/XaCbA/list-of-all-cv-levels-and-their-corresponding-real-cv

You can use this to check your own CV (right now). And for how much CV you will receive, you can just create one (and not confirm it) to see how much CV you will receive. Games that are bundled before will go to this list bundle and you will receive 15% of their original CV.

If it's a bundled game, you will get 15% of the game's store price. If it's not you get the full value. Check here https://www.steamgifts.com/bundle-games

Bear in mind that if the price of a game goes down your CV goes down as well.