Ireland Universities & admissions - Application process

Have I given any English language exams yet, and if not, which exam would you recommend in UK/Ireland for a Master's?

Do I need to provide recommendation letters from my college again for the application in UK/Ireland for a Master's?

Can I include short online internships done during my vacation in my Statement of Purpose and resume in Ireland/New Zealand for a Master's?

Will you help me with my Statement of Purpose (SOP) in UK/Ireland for a Master's/Bachelor's?

What are the application form charges for universities in Ireland/Singapore for a Master's?

Is it mandatory to disclose my last CTC (salary) during application in Ireland/Germany?

Can I apply to multiple countries like UK, Ireland, and Canada simultaneously and then decide later?

For all the applications, do we need to pay money before applying or can we apply for free in UK/Ireland for a Master's?