I think it really depends on how much work you are doing yourself and how much you are subbing out. I sub out HVAC and electrical. I know I can get a new furnace and ac installed here for $6000. I know that finishing a half-assed electrical update is going to cost me about $4000. That's the prices in my market. Your market might be much higher.
As far as the rest it's just deciding what I want in the house and pricing it out online or in store. It also varies by the market that I'm in. Laminate or quartz?? Farmhouse or fancy?? I have a notebook that I take through each property and write down everything I need to get done. I sketch out the room and add the measurements. Then I go home and start my research. After you've done a few of them you just know what things cost.
Always be sure to add a little for overages and unexpected things. Our current flip ended up having plywood under the sheetrock. Demo was horrible! Bathroom tile was GLUED to the plywood subfloor. Hardwood floors under the carpet were not able to be salvaged (we weren't counting on that anyways). Things can add up, but if you end up with things like this you can always make adjustments as you go along to help recoup the costs.