Okay, this should be basic stuff, but I can't find it anywhere...
something like this:
score%=100
a$="The score is "+str$(score)
Okay, apparently you can concatenate an int with a string without conversion:
Local lv$="level_"+level+".txt"
to convert any type to another type do something like mytype(myvar) so it would be
score%=100
a$="The score is "+String(score)
Yeah str$ is obsolete because you can use String() to convert to a string, more in keeping with how you use Int() or Float() etc.