To repeat a Test Case multiple times, you could:
a) use a dataset to loop over the Test Case. Even if the Test doesn't actually require data, you could enter a "dummy" step that has a parameter e.g. =V1. Then you could add multiple datasets.
b) add the Test Case manually multiple times to another Test Case / Test Suite.
For Test Suites, the only way to repeat them is to add them to a Test Job. If you aren't working with multiple AUTs though, I'd stick to using Test Cases in a Test Suite.
Sorry this thread is almost a month old; I've been off the forums for a while. If you still need a relatively concise way to repeat a test case a large number of times, here's another way to do it, provided your Jubula version is recent enough to support functions:
1) Create a test case (TC1) whose first step is to set a variable (e.g. LOOPVAR) to the number of times you want to run your test case.
2) Add a second test step (not a test case) to TC1 that checks for $LOOPVAR to be less than or equal to 0.
3) Create a second test case (TC2) that calls your test case.
4) Add a step to TC2 that stores the value
5) In TC1, add TC2 as an Event Handler for event type "Check Failed" and reentry type "RETRY", with a maximum number of retries greater than the initial value of LOOPVAR.
This should repeat your test case the correct number of times before finally passing. It has the advantage of not requiring a huge dataset or a huge test case/suite.