I hate to do this and I usually try not to, but I advanced searched you, OP, as you haven’t stated why you asked the question and that would really affect my answer. Based on your thread in July, it looks like you’ve been going through a truly horrible time.
If you’re asking if it’s normal for an adult to skip meals occasionally, sure. Some adults often don’t eat breakfast, but they do eat a normal amount of calories over their other meals. If, as I’m concerned, you’re asking because you’re not eating due to depression and trauma and people have said something to you, then you may be skipping too many meals. Without you telling us your eating schedule and amounts, it’s just impossible to say.
If you need support or tips on how to try to get calories in when eating is absolutely the last thing you want to do (believe me, I’ve been through that - due to either physical pain or emotional pain), I’m happy to provide some tips, and I’m sure lots of other posters can as well.
Good luck, OP
You are worth good, nourishing food - we all are
(If I’m way off base, OP, please let me know and I’ll have my comment deleted).