We should get out of here means to leave the current place or situation immediately, often used to suggest moving to a safer or more comfortable location or to avoid an unwelcome circumstance. It can be used literally (exit a room) or metaphorically (end a situation or scene). Context and nuances

• As a request or suggestion: “We should get out of here” often conveys a sense of urgency or unease about staying where you are.
• In social or narrative contexts: it can drive a change of location, tone, or momentum in a scene.
• In casual use, it can be light or joking depending on tone and situation.

Common alternatives

• We should leave now.
• Let’s head out.
• We should get going.
• It’s time to go.

If you’d like, provide a sentence or scenario, and I can tailor the explanation and any equivalent expressions to fit the exact context.