Is it everybody is or everybody are?
It is always everybody is (not everybody are)—e.g., “Everybody is meeting there at 5 p.m.”).
Knowing whether to use is or are with indefinite pronouns can be tricky because some are treated as plural, some as singular (like everybody), and some can be either.
QuillBot’s free Grammar Checker will help you to check the subject-verb agreement in your sentences.