How to retaure Bitcoin wallet whithe this file "Walet.data" ?
What is the
exact name of the file that you have?
Is it actually "walet.data"? If so, that doesn't match any wallet file naming system that I am aware of.
If it is actually "wallet.dat"... then you just need to download and install Bitcoin Core (
https://bitcoincore.org/). Once you have that installed and fully synced, you'll be able to recover the wallet, by shutting down Bitcoin Core, and putting the wallet.dat into the Bitcoin Core "datadir" (you can find what this location is by looking at "Window -> Information" menu option in Bitcoin Core.)
Once you put
a copy of the wallet.dat in that location, restart Bitcoin Core and let it finish scanning the wallet.