There is no universal rule, and norms vary by office, client base and local culture. The safest interview choice is to reduce anything that could become an unnecessary distraction while still presenting yourself comfortably and professionally.

That does not mean tattoos or piercings automatically disqualify candidates. The question is whether the styling is likely to pull attention away from the conversation in the specific environment you are entering.

For a first interview, a sleeve that naturally covers a forearm tattoo or removing a nonessential facial piercing can be a low-cost conservative choice. You can learn the office norm later from employees once you have more context.

Prioritize clean, professional presentation and confidence. If covering something would be impractical or uncomfortable, focus on being polished rather than appearing self-conscious throughout the interview.

I would probably go slightly more conservative for the interview and learn the office norm later.