vorliegen
to be available
For information, data, documents, or results: to be present, available, or known.
Sobald uns die Laborergebnisse vorliegen, werden wir Sie informieren.
As soon as the lab results are available to us, we will inform you.

to be available / to exist
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to be available
For information, data, documents, or results: to be present, available, or known.
Sobald uns die Laborergebnisse vorliegen, werden wir Sie informieren.
As soon as the lab results are available to us, we will inform you.

'Vorliegen' is a separable verb. In a main clause, the prefix 'vor' stands at the end. The base verb 'liegen' (to lie) is conjugated and stands in position 2.
Der vollständige Bericht liegt jetzt vor.
The complete report is now available.
When you want to say for whom something is available, that person or institution is in the dative. The thing that is available is always the subject in the nominative.
Mir liegt Ihre Bewerbung vom 15. Mai vor.
I have your application from May 15 available to me.
The verb 'vorliegen' is mainly used in formal, written, or official contexts, for example in administration, science, or business.
Es liegt kein Grund zur Besorgnis vor.
There is no cause for concern.
'Vorliegen' is often used with abstract nouns as the subject. Typical examples include: results, information, an application, an offer, evidence, a suspicion, or an emergency.
Bisher liegen keine Beweise für seine Schuld vor.
So far, there is no evidence of his guilt.
to pass / consist / exist
'bestehen' and 'vorliegen' can both express that something exists or is present. 'bestehen' is more general and fits conditions, problems, rules, or possibilities that exist or continue to exist. 'vorliegen' is used especially when information, documents, results, or particular circumstances are available or present. Learners may confuse the words because both have to do with something being there. In practice: if you want to say that a document, a result, or a case is present, 'vorliegen' often sounds more precise. If something simply exists, 'bestehen' fits better.

Die Ergebnisse liegen seit heute Morgen im Büro vor.
The results have been available in the office since this morning.
Zwischen den beiden Vereinen besteht seit Jahren eine gute Zusammenarbeit.
There has been good cooperation between the two clubs for years.