I don't think you're aware of this, but only TF2Maps admins can host map tests, and they don't really have a schedule of when they do it, so unless you want to go around asking them (which you can find a list on Discord to ping) just chill, man.
US Map Test usually, not always, happen daily between 6pm and 10pm eastern. I say usually as this all depends on hosts free time to host a map test session. Sometimes there might be a day without and US tests. If you don't want to be in the discord you can always join the steam group chat room, we also announce stuff there but you won't be able to send any messages since we shifted over to discord back in 2017.
If this is your first time logging in after the migration (Feb 8, 2022), you must reset your password to log in. Follow this guide if you're having trouble