EPEL repo for 10.0 is not yet populated. It’s expected in about 2 weeks.
So far only EPEL for AlmaLinux Kitten 10 is available.
For simple packages like htop I believe you can use it:
https://epel.repo.almalinux.org/10/x86_64_v2/Packages/htop-3.3.0-5.el10_0.alma_altarch.x86_64_v2.rpm