It is a modal auxiliary verb used primarily to give or ask advice or make recommendations. It can also be used with “I” or “we” in conditional clauses.
“Should” comes first in a verb phrase, that is, after the subject and before any other verb in the sentence.
Examples of how “should” is used include:
“Should” can also be formulated in a question form to ask for or give advice or make recommendations.
Here is a scenario where the importance of “should” is evident: