This is very broad question, have a look at some of the work Cenfri (Cenfri.org) does but also more broadly in terms of data the FinSope and Global FinDex as well for more quantitative inputs.
Here some examples of review of literature on different financial inclusion topics:
A tesis on "FINANCIAL INCLUSION FOR DEVELOPMENT: WHAT DOES THELITERATURE SAY" - https://ecommons.cornell.edu/bitstream/handle/1813/54752/Coker_Thesis_Body_v3.pdf?sequence=1
Report on financial inclusion and gender - https://reliefweb.int/report/world/gender-and-digital-financial-inclusion-what-do-we-know-and-what-do-we-need-know
The nexus between economic growth and financial inclusion - https://www.emerald.com/insight/content/doi/10.1108/JFEP-01-2015-0004/full/html?journalCode=jfep
Financial inclusion and development - Article Mobile financial services, financial inclusion, and developm...
Yes, financial inclusion is an emerging issue over the world. You can do research on the impact of financial inclusion on monetary policy effectiveness; the Role of financial inclusion on economic growth, and other many dimensions.
Yes sir there are lots of scope in doing research on financial inclusion we can study the impact of financial inclusion on economic growth, financial wellbeing, economic empowerment, monetary policy transmission, bank capitalisation, financial capability, financial literacy, financial deepning etc
It is possible... Here is one of reference about Financial Inclusion you can read http://www.jett.dormaj.com/docs/Volume8/Issue%201/html/Digital%20Economy%20and%20Financial%20Inclusion.html