I see there is no limitation in number of times you book the practical driving test (until you don’t have issue in paying for it and slots are available)
There will be the expire date for your theory test( 4 months from the date of passing the exam) if you were not able to complete the practical driving exam in 4 months then you need to take the theory test again
You can find the expire date once you login to
https://fp.trafikverket.se/boka/#/