I wrote a [time] (https://www.reddit.com/r/AskHistorians/comments/gus804/what_role_if_any_did_loyalists_play_in_american/) or [two] (https://www.reddit.com/r/AskHistorians/comments/gtgfll/what_happened_to_prominent_americans_who_sided/) about this topic and you may find those answers informative.

In summary, many left (estimated at 60,000) and settled elsewhere in British territory, the bulk of those going to Florida and Nova Scotia and many leaving during the war. This left by some estimates between 300,000-350,000 in America (Our 1776 free population was about 2M and about 20% were loyalists by current estimates). Some had been influential leaders, some just common citizens. The Treaty of Paris had a special provision allowing reintegration after the war. Most that served militias were pardoned and allowed to stay as Americans and any deprived of property could attempt to regain it through legal means (typically far less succesfully than they would have liked). They always had an option to leave by their own time and dime, just as we can today. The British gave free rides to many citizens that wished to leave when the military pulled out of areas like Boston and New York.

Happy to answer anything my previous answers don't cover for you or recommend further reading on the topic.