I know that you are working on apps that have a ? as version number.
But I decided to post this because:

• This is a Release Candidate (not a public release)
• Detecting the version number for older versions was tricky (https://vulndetect.org/topic/250/added-lazarus-app-request)
• The version info can be found in C:\lazarus\ide\version.inc (I will send this by mail)
• I am not sure if the version number stored in the EXE can be used (see below)

Here the information extracted from the EXE file:

File name and path:     C:\lazarus\lazarus.exe
Product Name:           Lazarus IDE
Internal Name:          
Original Filename:      

File Description:       
Company:                
Legal Copyright:        
Legal Trademarks:       
Comments:               

File Version String:    2.0.0.2
File Version:           2.0.0.2
Product Version String: 
Product Version:        0.0.0.0