Jazz improvisation wouldn't be the same without it. The lydian domimant is one of the three most important scales to know when soloing on a dominant 7th chord. The other two are: the diminished scale and the altered scale.
Here are my links to those scales:
diminished scale in depth:    • The DIMINISHED SCALE in depth, UNLOCK...  
altered scale in depth:    • The ALTERED SCALE in depth, put BITE ...  

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Many videos about jazz and classical piano can be found in my
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lydian dominant study sheet (free pdf): https://bit.ly/3womgbe