In the form designer for Power Apps model-driven app (or Dynamics 365 app), there is no way to add some styling to the labels of the controls (field, tab, section, grid, etc.). But if you want to emphasise some of the words in your label, you can achieve some limited formatting by using the Unicode version of bold/italic characters. You may also add some emojis like emoji Meg.
…
Continue Reading Linn Zaw Win’s Article on their blog
Formatting Section or Field Label as Bold/Italic in Model-driven App
In the form designer for Power Apps model-driven app (or Dynamics 365 app), there is no way to add some styling to the labels of the controls (field, tab, section, grid, etc.). But if you want to emphasise some of the words in your label, you can achieve some limited formatting by using the Unicode version of bold/italic characters.
Blog Syndicated with Linn Zaw Win’s Permission
More About This Author

Array
Dyn365CE2022.11.19Dynamically List Rows From Any Dataverse Table with FetchXML in Power Automate
Dyn365CE2022.10.31Generate Document From Word Template and Send As Email Attachment Using Cloud Flow
Dyn365CE2022.09.19Formatting Section or Field Label as Bold/Italic in Model-driven App
Dyn365CE2022.09.05Debugging Pre Operation Plug-In Without Plug-In Trace Log