Here, again, we have a lack of specificity. What "it" is being referred to?
Others have already mentioned the way to bring up NVDA's Document Formatting settings.
Every NVDA user needs to know how to do two basic things when almost any question arises. The one you want really depends on the exact nature of the question:
1. Bring up the NVDA Commands Quick Reference: NVDA + N, H, Q [NVDA Menu, Help, Commands Quick Reference]
2. Bring up the NVDA User Guide: NVDA + N, H, U [NVDA Menu, Help, User Guide]
The details regarding document formatting settings are in the User Guide and can be found by searching on that exact phrase. The Font Attributes checkbox should cover bold, italic, and underline attributes.
Sarah is absolutely right that an example of what's wanted would go a long way in getting the correct answer.
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Brian - Virginia, USA - Windows 10 Pro, 64-Bit, Version 22H2, Build 19045; Office 2016, Version 16.0.15726.20188, 32-bit
"Be Yourself" is the worst advice you can give to some people.
~ Tom Masson
