Longevity

So I bought my 2017 Ford Escape SE used during COVID year. This vehicle has high mileage because I drive it on my drill weekends for the Air National Guard. I perform the regular oil changes on a regular basis. Replaced the tires and brakes along with its mini turbo. It had some body work done in it with a complete exhaust replacement after being rear ended a while ago. Here is my question, how many miles do you feel I can get out of this particular 1.5 liter engine? If I had some extra money I would probably get the transmission updated. It still has the get up and go like it wants to be a V6, but is an inline four. Can I get some insights from other owners and mechanics out there in cyberspace?