It's something that's not immediate because I don't have the space nor the money but I'd like to one day. What would the process be like and how much should I expect to spend?
As an example, you can buy a kosher sefer torah Buying a Sefer Torah
Price categories vary from $24,000 - $55,000; the cost is determined by the consistency and beauty of the Ktav(script). All of our Torah Scrolls are 100% Kosher and acceptable irrelevant of price. The materials used in the Sefer Torah – Klaf (parchment) and ink are the best available in Israel today. The Price of the Sefer Torah includes all necessary inspections and proof reading with a final inspection by computer. Your Sefer Torah is guaranteed to be 100% kosher and fit for use.
You also need to get an aron kodesh, have a proper room to keep it in and, given that you want to have services, you would need to build rooms that can have a proper mechitzah and sufficient seforim (at least siddurim and chumashim) for the people.
You would also need multiple sifrei Torah for days on which one must lein from multiple sifrei torah or to avoid having to roll to Rosh Chodesh and back to the shabbos parsha.
You would be better off lending a sefer torah to a shul that has the proper facilities.