Vow
Pledge, Oath, Covenant
A vow promise is the promise that you made with your vow. It's the oath you sweat to keep!
せいやく
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
こちらが誓約書となっておりまして、こちらとこちらにサインをして頂く必要があります。
Here is the written pledge. You need to sign it here and here.