Multiple entry Schengen tourist Visa requirements from India
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To get a multiple-entry Schengen visa, you need a history of single-entry visas (without overstay or similar incidents) and a premise to justify repeat visits. Probably your first couple of visas will be single-entry visa with a very narrow period of validity.
Usually you should apply from your place of residence. This does not require employment, but of course employment helps to document a settled lifestyle and ties to your place of residence.
Bank statements are one part of documenting those ties. This answer talks about the UK, but the principle is the same.
Depending on the immigration status of your fiancee and the permanence of your relationship, you might be able to get a family visa.
Most likely, you will have to apply for several single-entry visa before a multiple-entry visa is considered. And you probably won't be able to get any visa in the time where you are still resident in India.