Take a look at the SQL
string functions.
In particular, you should be able to use
CharIndex() to find your fingerprint/preceding text and then
Right() and
Len() to isolate the rest of the string.
e.g.
SELECT Right(SubQuery1.Value, Len(SubQuery1.Value) - CharIndex('e v', SubQuery1.Value) - 2)
Given your source text as example,
Windows 10 Enterprise v1903
....:....1....:....2....:..
Len(SubQuery1.Value)
returns 27, the length of the source text.
SELECT CharIndex('e v', SubQuery1.Value)
returns 21, the position of the "e" where "e v" was found.
You want to everything to the right of that "e" plus the next two characters, space and "v", so
Len() - CharIndex() - 2.