Create EN-US version of stats.md

Author: oweid

docs/en_US/config/stats.md

@@ -1,3 +1,48 @@
 # Stats
 
-The documentation for this page is missing. Please submit a [pull request](https://github.com/v2fly/v2fly-github-io/pulls) or refer to the Chinese documentation.
+V2Ray provides statistical information about its operational status.
+
+## StatsObject
+
+`StatsObject` corresponds to the `stats` entry in the configuration file.
+
+```json
+{
+}
+```
+
+Currently, statistics have no parameters - internal statistics are enabled simply by the presence of the `StatsObject` entry. You also need to enable corresponding items in [Policy](policy.md) to collect specific data.
+
+The following statistics are currently available:
+
+## User Data
+
+> `user>>>[email]>>>traffic>>>uplink`
+
+Uplink traffic for a specific user, measured in bytes.
+
+> `user>>>[email]>>>traffic>>>downlink`
+
+Downlink traffic for a specific user, measured in bytes.
+
+:::tip
+Statistics will not be enabled for users without a specified Email address.
+:::
+
+## Global Data
+
+> `inbound>>>[tag]>>>traffic>>>uplink`
+
+Uplink traffic for a specific inbound proxy, measured in bytes.
+
+> `inbound>>>[tag]>>>traffic>>>downlink`
+
+Downlink traffic for a specific inbound proxy, measured in bytes.
+
+> `outbound>>>[tag]>>>traffic>>>uplink`
+
+(V2Ray 4.26.0+) Uplink traffic for a specific outbound proxy, measured in bytes.
+
+> `outbound>>>[tag]>>>traffic>>>downlink`
+
+(V2Ray 4.26.0+) Downlink traffic for a specific outbound proxy, measured in bytes.