Text - Hi What does mean Tyl miss Stand for ?

You are using code words when you don't know what they mean. Stop it.

"Text" - does not pertain to this post.
"mean" = "average"
"Tyl" is a stock symbol for Tyler Technologies (NYSE: TYL) where analysts have a habit of missing predictions for earnings. You need to study business administration and stock investing to understand why that is important.
"Tyl" might stand for "Today you learned", an internet meme.
You might have meant "TTYL" which is "Talk to you later".
The entire post depends on what you are talking about.