Sure! Just download this track and you are ready to use it! If you want to monetize your video on YouTube, you need to purchase a license.
Yes, if you want to monetize your content. Otherwise, they will not be imposed any restrictions (except for monetization). Your video is safe. If you want to use my tracks in your videos and monetize them (earn money) – you need to purchase a license.
If you want to earn money with this music, you should buy a proper license.