A recommended inital step is to pass the relevant courses within the UiPath Academy
the are several options to prove the skills afterwards e.g. like be active here in the forum and get recognized for the help
Also you can check e.g. Topics like
[HowTo] LINQ (VB.Net) Learning Catalogue - Help / Something Else - UiPath Community Forum
and convince by having all this knowledge when invited to a job interview
Just to mention a few of many options