It is rather slow. Some of it is the time to first byte, much of it continues beyond that. Check out an overview of it here: https://gtmetrix.com/reports/blockcompound.com/BY22LN9O
I would try a static caching plugin for Wordpress. I don’t know what the latest popular plugin is for it, but I found this one and it certainly sounds like it does what I’m suggesting: https://wordpress.org/plugins/wp-fastest-cache/
Note that some popular caching plugins can be configured in a wrong way so as to actually slow down your website, despite being very capable for advanced users. One example of that is W3 Total Cache with database and object caching set to disk.
If that doesn’t work, try just disabling plugins one by one and see if the website speeds up after disabling one. Use gtmetrix.com rather than just refreshing your web browser, let it give you a more objective answer. Hope that helps!