I don’t know an exact solution to your issue, but I’ve found 2 similar posts: Trouble running Bisq v1.1.5 in Windows 10 x64 (it did not launch anything!) - #9 by Laroc007 and Bisq program running, But I can't open the window
Some ideas: use task manager to make sure if it’s running or not, try launching Bisq from windows “terminal” or clicking directly to the .exe file, and search to data directory if Bisq folder has been created. Data directory - Bisq Wiki