While SharePoint does not have a version button
or about box with version info, there are a few distinctive features on each
version. Unfortunately, you will not always see these features if an
administrator and site designer has heavily customized the site. 
We can find the version using Power Shell
You must be a SharePoint farm administrator
with Shell Admin rights. 
ASNP
Microsoft.SharePoint.Powershell
(Get-SPFarm).Products
Please note: You may encounter below exceptions
while executing PowerShell commands even if you are SharePoint farm administrator
Add-SPShellAdmin: Cannot
access the local farm. Verify that the local farm is properly configured,
currently available, and that you have the appropriate permissions to access
the database before trying again.
PowerShell: The local farm is not accessible. Cmdlets with
FeatureDependencyId are not registered.
This is because you do not have Shell Admin
rights. Here you need to Provide Shell Admin right to the user from which you
might be looking for SharePoint version. Here is a syntax to provide rights
Syntax : Add-SPShellAdmin -UserName Domain\User
Let’s now proceed with executing Powershell commands to get the SharePoint Version.
This returns a list of GUIDs related to what
specific Microsoft Server products installed:
To figure out what these GUIDs mean, please refer
to the table below.
VALUE 
 | 
  
PRODUCT 
 | 
 
84902853-59F6-4B20-BC7C-DE4F419FEFAD 
 | 
  
Project
  Server 2010 Trial 
 | 
 
ED21638F-97FF-4A65-AD9B-6889B93065E2 
 | 
  
Project
  Server 2010 
 | 
 
BC4C1C97-9013-4033-A0DD-9DC9E6D6C887 
 | 
  
Search
  Server 2010 Trial 
 | 
 
08460AA2-A176-442C-BDCA-26928704D80B 
 | 
  
Search
  Server 2010 
 | 
 
BEED1F75-C398-4447-AEF1-E66E1F0DF91E 
 | 
  
SharePoint
  Foundation 2010 
 | 
 
1328E89E-7EC8-4F7E-809E-7E945796E511 
 | 
  
Search
  Server Express 2010 
 | 
 
B2C0B444-3914-4ACB-A0B8-7CF50A8F7AA0 
 | 
  
SharePoint
  Server 2010 Standard Trial 
 | 
 
3FDFBCC8-B3E4-4482-91FA-122C6432805C 
 | 
  
SharePoint
  Server 2010 Standard 
 | 
 
88BED06D-8C6B-4E62-AB01-546D6005FE97 
 | 
  
SharePoint
  Server 2010 Enterprise Trial 
 | 
 
D5595F62-449B-4061-B0B2-0CBAD410BB51 
 | 
  
SharePoint
  Server 2010 Enterprise 
 | 
 
926E4E17-087B-47D1-8BD7-91A394BC6196 
 | 
  
Office
  Web Applications 2010 
 | 
 
35466B1A-B17B-4DFB-A703-F74E2A1F5F5E 
 | 
  
Project
  Server 2013 
 | 
 
BC7BAF08-4D97-462C-8411-341052402E71 
 | 
  
Project
  Server 2013 Preview 
 | 
 
9FF54EBC-8C12-47D7-854F-3865D4BE8118 
 | 
  
SharePoint
  Foundation 2013 
 | 
 
C5D855EE-F32B-4A1C-97A8-F0A28CE02F9C 
 | 
  
SharePoint
  Server 2013 Standard 
 | 
 
B7D84C2B-0754-49E4-B7BE-7EE321DCE0A9 
 | 
  
SharePoint
  Server 2013 Enterprise 
 | 
 
D6B57A0D-AE69-4A3E-B031-1F993EE52EDC 
 | 
  
Microsoft
  Office Web Apps Server 2013 
 | 
 
In my case, I have following 
9FF54EBC-8C12-47D7-854F-3865D4BE8118 
 | 
  
SharePoint
  Foundation 2013 
 | 
 
B7D84C2B-0754-49E4-B7BE-7EE321DCE0A9 
 | 
  
SharePoint Server
  2013 Enterprise 
 | 
 
Refer more articles related to SharePoint
and Dynamic CRM
Vipin
Jaiswal
vipinjaiswal12@gmail.com

