$ find ~ -maxdepth 1 -name '.??*'|wc -l
    435

[edit]

A sampling...

    $ (cd && find . -maxdepth 1 -name '.*'|sort -R|head)
    ./.texlive2023
    ./.stl
    ./.stp
    ./.repo_.gitconfig.json
    ./.xsel.log
    ./.msmtprc
    ./.fonts
    ./.bash_logout
    ./.steampath
    ./.compose-cache