If you were asking how to bypass a block that someone else placed on you, that is not possible from your end; you must contact them through another means or wait for them to unblock you.
Alternatively: Tap in the top-right corner, tap the red minus icon next to the number, and select Unblock . How to Unblock Numbers on Android how to unblock blocked calls
Unblocking restore voicemails or texts sent while blocked. Those are usually gone. After unblocking, future calls and messages will come through normally. If you were asking how to bypass a