Twitch sign?

Moin moin, can someone tell me what this symbol at the bottom left means or what does it do. So this 520.

lg

There are now somehow channel points with which - depending on the streamer - you can, for example, ask questions, which are then highlighted in the chat.

At least that's what I think it is.

These are channel points because you can do certain things and use them as a bet

These are channel points when you watch people you get some more and you can activate some things in the chat, if you click on it you will see the selection such as highlight a message or get a certain emote, what streamers come up with, I saw who was there Things in there where he got a bottle of water, made a coffee or his pet gives yummy, if who chooses, how many you need is written in there, the 520 is the number you currently have there channel points. If you choose one of them, it uses up the points, but by watching you keep getting some.