In this case the vow would involve giving oneself or another person to God. This can be stated clearly. Alternate translation: "If anyone vows to give someone to Yahweh" (See: [[rc://en/ta/man/translate/figs-explicit]])
Instead of giving the person, he would give the Lord a certain amount of silver. Alternate translation: "use the following values as your gift to the Lord in place of the person" or "give the Lord the following amounts of silver instead of the person" (See: [[rc://en/ta/man/translate/figs-explicit]])