Regex pattern to remove special character

Help Studio
20

"(\bW?Q)([\D]?)(\d+\b)\b"

This image shows a programming debugging window where a string pattern and text are defined, a regular expression is used to find a match, and the first match found is "Q315362". (Captioned by AI)
This image shows a programming debugging window where a string pattern and text are defined, a regular expression is used to find a match, and the first match found is "Q315362". (Captioned by AI)704×242 48.7 KB

will work also on the variation:

The image shows a screenshot of a Visual Studio Immediate Window where a regular expression pattern is used to find and extract a specific alphanumeric quote number ("WQ-12345678") from a provided text string. (Captioned by AI)
The image shows a screenshot of a Visual Studio Immediate Window where a regular expression pattern is used to find and extract a specific alphanumeric quote number ("WQ-12345678") from a provided text string. (Captioned by AI)696×193 50.3 KB

And will handle not found Match

The image shows a debugging session with a string extraction in progress; strText contains a freight pickup detail, and the output of a regex match operation is "NotFound". (Captioned by AI)
The image shows a debugging session with a string extraction in progress; strText contains a freight pickup detail, and the output of a regex match operation is "NotFound". (Captioned by AI)715×219 49.3 KB

For sure it can be adapted and modified if it is needed

Also have a look here:
[HowTo] LINQ (VB.Net) Learning Catalogue - Help / Something Else - UiPath Community Forum