How to extract values with TSQL json_value( ) on string {"key":"key1","value":"value1"}

Question

Thank you in advance for answering my questions. I need to extract value using TSQL json_vlaue() from col1 = [{"key":"key1","value":"value1"}, {"key":"key2","value":"value2"}, ...] I can extract value like json_value(col1, '$[0].Value'), json_value(col1, '$[1].Value') ... However, there is no guarantee that the key-value pair order will always be the same. So I would need to extract value using keys rather than indexes.

Do I need to manipulate the string to {"key1":"value1", "key2":"value2"} then apply json_value(col, '$.key1') to get the value? If so, how do I preprocess the string?

Thanks!