How i check F5 only HTTPS for web management ?

Hi - you can use netstat to prove that http is not open on the management interface. This should work

netstat -an | grep <management_ip>

There's loads of info out there about securing your device if this is a concern. Some examples are...

https://support.f5.com/csp/article/K13092

https://support.f5.com/csp/article/K17333

https://support.f5.com/csp/article/K13309