Can a 3 and half year old watch a you Rated film?

In general, a film rated "You" (suitable for all ages) is appropriate for a 3-and-a-half-year-old to watch. However, parental discretion is important, as individual children may have different sensitivities and reactions to various content. It's advisable for parents to review the film beforehand to ensure it aligns with their values and is suitable for their child's maturity level.