Your IP is available to many sources, Avast is just making you aware of this in the hope that you will purchase the Avast VPN product.
If your IP is known then it is a very simple task to show where that IP physically is. However, that information is likely to be incorrect also, as it is usually the IP assigned by your ISP. Your IP connected to this forum isn't in Kent
Personally I don't really care who knows what my IP is as it isn't a fixed IP address but one assigned by my ISP. What anyone can do with this information, I would say is debatable.