Uiua, 22 bytes, score 4

⍜⇌'⊂@"⊂"&p-π\""+π

Try it!

this would be much easier if the implicit stack printing didn't put quotes around strings, as it stands i could not get rid of &p, either - or + for offsetting the codepoints, or ", $ , or @ and a lot of ⊂s

Uiua, 22 bytes, score 4

⍜⇌'⊂@"⊂"&p-π\""+π

Try it!

restricted set is &p-"

this would be much easier if the implicit stack printing didn't put quotes around strings, as it stands i could not get rid of &p, either - or + for offsetting the codepoints, or ", $ , or @ and a lot of ⊂s